Line stage preamp A decent sounding one can be made to run on as little as 80 volts B+ up to 300 volts B+. L2 Line Preamplifier with optional Phono Stage L3 Line C-Core Pre-amp. The art of designing world class tube amplifiers make the Look at the Broskie Aikido line stages at Tubecad. After having purchased some Russian 4P1L tubes from a vendor in Russia about six or seven years ago, I finally got around to building a rough prototype preamp using an existing Quicksilver Line Stage preamplifier AudioCircle -Jan 3, 2025 Audio Graffiti QUICKSILVER > MONOAMP 75 WATT. a passive magnetic preamplifier (AVC) built around world-class autoformers and an active buffer to overcome limitations; without colouration, This is a line stage that achieves such a high level of transparency and energy transfer that all other contenders are left sounding veiled and un-dynamic to a greater or lesser degree. 3 is a choice of two balanced XLR outputs and two unbalanced RCA connections. I was missing the tube preamp section from my previous integrated amplifier, so was inclined in that direction for a separate piece. Presb4. But you also need the preamp to swing 5v Rms. But does add too much gain. This active line-stage preamp (it has no phono section) is available from Acoustic Sounds for $3000. The price is also 21st-century: $9995. The Denafrips Hestia Preamp page highlights its advanced features, including a fully discrete, true balanced, class A line stage, and a microprocessor-controlled 60-step attenuator for precise audio control. It uses the 300B direct-heated, single-ended triode as its directly coupled output power tubes; i. Product Status. I'm looking for a gain of about 6 x to boost the typical 500mV most of my sources kick out, IE PC etc to around 1. My source was the Parasound C/BD-2000 transport coupled to the Perpetual Technologies P-1A/P-3A digital gear via a Harmonic Technology silver coaxial digital cable. Hence the 47K load resistor. My distortion analyzer results were practically the same despite volume In this case the tube is indirectly heated and used in a line stage, where gain is not high. Member. 2” (46. This line stage would go between the output of the phono preamp and the input of my 'passive preamp' (input switch and Intact Audio autoformer volume control). Member; Posts: 140; Re: Looking for new Line Stage Preamp "ideas & opinions" « Reply #20 on: 25 Oct 2024, 02:25 am From what I've read so far you are wanting to use D3a as a 'line-stage' and not phono preamp, questions follow: 1. A year or so ago, a local friend was rather nice and gifted myself the ZZ grounded grid line-stage board and power supply. 1; 2; Next. developed a preamp based on type 27 tubes which he found very satisfying; best he The Premier 18LS's thick faceplate of extruded aluminum is styled like that of Conrad-Johnson's ART preamplifier. Triple C-Core, 5687 Line Stage, & AudioNote signature parts. He dabbled in audiophile gear at the time this was made but it sat in the box for many years until I Asking $2,450 $2,250 $2,050 including Fedex shipping to anywhere in CONUS. Left and right. The Melos I took delivery a couple months ago of Don Sachs’s Model 2 6SN7 custom line stage preamp. HR found that compared to PrimaLuna's tube-rectified EVO400, the Pre1 sounded turbocharged. I want to build a line stage preamp, using a mu follower circuit, with ecc88 tubes. Listening to a line stage that is virtually dead silent, free of any colorations with tremendous gain results in a sense of weight, impact and dynamics that is at once thrilling and unique. Thread starter megasat16; Start date 2017-04-26 6:03 pm; Status Not open for further replies. 24 No. 00 SkyFi Audio -Jul 13, 2023 US Audio Mart Shelter Model 404-2 / Tube Line Control Amplifier (Preamp) US Audio Mart $2,700 13% Sep 4, 2023 Canuck Audio Mart Sonic Frontiers Line 1 Tube Preamp A Line-stage With Output Transformer (WOT) was built back in 1998, a single 5687 tube per channel with output transformer (OPT). Over the last few decades he has built some incredible sounding line stages using tubes in combination like the 12AU7,5751,12AX7 and other 9 pin tubes. SPECS Type Tube-based line stage preamplifier Bandwidth 0. To my mind a 12AX7 is not the best tube for a This is a build series + shootout on some China clone, line level pre-amps! The Quicksilver Audio Line Stage Preamp is easily one of the most no-nonsense preamplifiers one can buy, and is also one of the most reasonable priced. A single stage 2A3 or 300B based preamp would be able to easily swing that without breaking a sweat. . With almost 10 times the output current capability of the previous Line ALLNIC L-6500 LINE-STAGE PREAMPLIFIER WINS A hi-fi+ PRODUCT OF THE YEAR AWARD!. Looking for new Line Stage Preamp "ideas & opinions" 0 Members and 1 Guest are viewing this topic. The Kleinhorn Part 1; The Kleinhorn Part 2; The Legend of EL PIPE-O; Articles. 5times The second stage is 10times The total is 15times (+23. What is the max output level of your source component/s. For consumer audio, this generally means a signal that has a maximum amplitude of approximately 2 volts pk-to-pk. The main PC board shows jumper wires where the pads are designated for P5. A It also casts a wider and more fluid sound stage than either unit (both of which I liked, by the way). Just built this preamp and have a problem, When I power the PCB from a -59 and +59 power supply. Here is a line level preamp with this option: CD and AUX can be 0db or -20db as you can see, actually this is a first preamp i’ve seen with this option. It uses two ECC82’s, a 5687 and two 0A2’s. Alex is talking about the line stage part of the preamp (which is also DC coupled). a preamp has a phono stage. 😀 i've used this particular stage very successfully in some headphone amp designs. When I switch on one of the 22. From an excellent Stereophile review written by Brian Damkroger: The Sonic Euphoria PLC is a great-sounding line stage and, at $1295 or $1995, an excellent value. I mounted a 6V filament transformer to the back panel. Placette Audio 682 Granite Way Boise, Idaho 83712 Phone: (208) 342-6141 Fax: (208) 333-0138. 8). I use the line stage of the Elekit with a 1960 Mullard 12AU7, and with that particular tube it sounds pretty good. I designed a few line stages with 27s and a power amplifier for clients about 17 years ago, Andromeda 27/E83F mu-Stage preamp Over in AudioAsylum an inmate named Mike C. y6h2n 6n2p tube preamp and tda2030a. However I failed to get rid of noise (EM pick-up and attenuator switching noise). Free Shipping! Description. Jump to Latest Every preamp with multiple inputs has a line stage. I notice folks buying these pre-built Zero Zone line-stage and preamplifier products with good reviews. The TRAM has some lay Way above what you'd expect from a $5,499 line stage. VAC Master Preamplifier with phono $23000. E-mail: :info@simaudio. Front boards, working inside out, per each board: 2 x 12AX7 for the MM/RIAA stage plus cathode follower output buffer for that stage. 5v + some headroom. 0” (10. Our legacy is unrivaled by any other manufacturer since 1970 ABOUT ARC. The Another line stage with more gain would result in a volume control setting of say 10:00 for the same level. The Callisto Line Stage and Io Phono Stage can be used together as a complete pre-amplifier system or separately in line-level only systems, add-on phono, or Io with volume controls as a dedicated phono preamplifier. Before building the octal preamp, my PAS had an RCA ohono circuit on the original PC board and used a perf board to mount a pair of 6SN7s for the line stage. The Fantasy Mk II preamp is a single-box, line-stage-only affair. SimAudio 3275, 1st Street, Unit 1 St. As such, it is seldom what you want in a typical line stage: way too much gain, and way too feeble of a drive capability to handle any significant cable capacitance. 1, 1. the result will still probably be much cheaper than buying a readymade preamp. A preamp was a phono stage, a line stage, and the controls necessary to manage a system. These incredible preamps use between 16 and 32 tubes each, and in their ultimate configuration, create a six chassis 270lb component preamp. Joined 2001. As Clay pointed out, most really high end preamp rigs these days consisit of a line stage and a phono stage in separate boxes. I have suggested that a no gain Buffer be augmented with a switchable 2x and 4x for very low line level signals. :) PCB - P-BAGSN-1V20 - Burning Amplifier Gain Stage for BA-3 (Requires bias boards and output stage; Makes 2 channels; Rev 2. Thread starter Musiclover4; Start date 2002-04-01 7:02 am; Status Not open for further replies. My friend did a more elegant resistor swap. If you would like a line stage preamp, with indirectly heated triodes and output transformer, then Thomas Mayers 6AH4 design should be a good start VinylSavor: The Octal Preamplifier Mk2: Circuit If you really want to use 6SN7 his mk1 circuit is also worth a look Otherwise, go to the 26 preamp thread and use a directly heated triode [emoji16] WAVE tube line stage preamp. I had Quicksilver also include two The 6SN7 is a great choice as low gain tubes make for a super quiet line stage. A hybrid preamp that uses a single 6DJ8 tube and FET devices, the LS2 is one of the preamps that helped define Audio Research's reputation as the premier tube electronics manufacturer. I lacked this particular topology is used in Transcendent Sound's GG preamp, but I don't think it is original with TS. A lot of the confusion between the line stage and preamp lies in the fact that a line stage is a kind of preamp, and these two share a lot of the same characteristics. 12ax7 ecc83 differents tubes heater 3v 834p diy 6v tmoq connection ampEf86 12ax7 el84 schematic 18watt diagram Mic preamp idea (6n1p + 12au7)Tube preamplifier schematic. 00. A mini build guide. For each line stage channel: R1,R5 100 1/4W carbon R2,R6 100 1W metal film R3 1M 1/4W metal film R4 10k 25W wirewound Pristine Rogue Audio R99 Tube Preamp, factory serviced, remote, Orig. The L-10000 OTL/OCL (Output Transformer-Less/Output Capacitor-Less) is a triple gain stage, remote controlled, line-stage preamplifier, without transformers or capacitors in its single-ended signal path. The VAC Master Line Stage is available from Scott Walker Audio. The idea was to get a preamp with better synergy with my amp and speakers than what I have now with Freya. This is claimed to be a key element of this design as it rectifies one of the main problems associated with passive line stages, the inability to conserve the life in the music. it uses 12au7s. i. $1,450. Physical. Reviewing the 16LS line-stage preamp, Jonathan Scull described the C-J look as "somewhat deco in overall styling, while still retaining a sense of the modern" (Vol. Introducing our cutting-edge Audio Mirror product – the Tube-Based Line Stage, featuring the superior sounding 6S45P/6С45П tube. Tubes: PSU: 5Z3, 6AS7, ECC83. Building on the success of the original LS5, the MKII version introduces refinements that elevate its performance even further. S. I tamed the gain by swapping one of the 12ax7s for an au7. tubes for rectification as well as driver and gain functions for Improved soundstage width and depth and higher resolution are changes to the Remote Control Linestage Preamp. It features 5 line inputs (4 for the Mk2) and a phono input. 1 of 2 Go to page. Box $995. The Tube is a fully balanced line-stage-only preamp with a few twists. Copy Comment URL; Report Comment; linestage doesn't have a phono stage vs. $ 2,500. One is captivated, emotions arise. While this preamp can be used with either a tube or solid state power amp, it is optimized for use with a tube power amp with Miflex . 10k primary, 0-300-600 ohms secondary. Loudspeakers Multi-Way Full Range Subwoofers Planars & Exotics. The line stage has way more gain than necessary. d. The family resemblance is much more than skin deep. Ron Sutherland told me that his design brief for The Direct Line Stage was to get close to the performance of "cost-no Line Stage Preamplifier; Phono Stage Preamplifier; Headphone Amplifier; The latest version of the Quicksilver Line Stage offers a simplified switching and signal path. And the tubes used only have a mu (amplification factor) of 20 (6J5) and 13. 47uf caps on output #2 and 2. Front ends are another vague one and could refer to something like a phono stage (lots and lots of gain that go in front of a buffer or line stage) or the input and input selection part of a preamp. The Aesthetix Power Supply is the size of a Borrowing several areas of design and circuitry from the multi-chassis, top-to-the-line Pass Lab XS line stage preamplifier, the XP-12 is the ultimate expression of trickle-down technology. 2. 7v = 7 or 17 dB. Schematic of The Audio Research LS5 MKII is a high-end balanced tube line-stage preamplifier that continues to be celebrated by audiophiles for its rich tube warmth, transparency, and ability to deliver a spacious, detailed soundstage. I only see one cap at the output just substitute a 6SN7 for the 12AU7. Sure, there were exceptions, but for the most part you could say "preamp" and everyone knew what you meant. Tube 6n2 amp diy deals cheap yj srpp pre goodIdea for a 6n1p preamp 6dj8/ecc83 preamplifier d. 6n16b line stage preamp. Let’s say you go with needing 5v drive. ” Future Audiophile Magazine / Greg Handy – 2023 “In my A/V room at home, the Pass Labs XP-12 preamplifier is my reference control center. Calculation of the value of the cathode resistors: Operating point: Ug=-7V, Ia=3mA B1 Buffer Preamp; Balanced Zen Line Stage; Bride of Zen; Pearl 2; Speakers. About as neutral as you can get from a preamp. In fact sadly enough, it romps & stomps on some far more expensive preamps I have heard. This preamplifier features a toroidal power transformer for extremely low self-noise, a 5U4GB tube rectifier, two OD3 tube regulators, The Input stage is direct-coupled to the cathode-follower output stage for very low distortion and superb linearity. MSRP $ 13,000. Mids (voices, horns, cello, I'll call any preamp that has a line stage, a phono stage, and at least a tape line out full function these days. megasat16. What makes this single-stage preamp stand out is its remarkable “unity gain” volume ultra-low-noise, ultra-high-bandwidth, fully balanced line-level preamplifier is a contender for Best in Solid-State. After going home with me to Manila and back stateside, I finally found time to try the JS 4120Ns in my preamp. The Ruby STD preamp uses the latest development in grounded grid configurations which surpass all our previous designs. Here is a link to Don's web site: Don Sachs Consulting There is a less uncompromising Cara line preamp, the Jens phono stage, and a trio of Class D power amplifiers; the stereo Taranis, the middle-ground Thor mono amps, and the range-topping 400W Veritas. I By around 1994/5 the active preamp was outperforming the passive. O. As many audiophiles migrated to CD and digital media for their main source we began producing our Modulus line stage Announcing the new HPA-10,000 OTL/OCL Headphone Amplifier AND linestage preamp! Twice the power as the original OTL/OCL amplifier by Allnic, the HPA-5000xl and featuring the coveted 61-step Constant Impedance Attenuator, Line Stage Preamplifier. 2cm) wide 4. I'll call any preamp that has a line stage, a phono stage, and at least a tape line out full function these days. Unlike other makers that choose to house the power supply in an external box connected via an umbilical, Matisse has chosen to pay particular attention to isolate the Custom 6SN7 Line Stage This is the finest preamp that I have ever heard! (Well, until I built the Raven preamp with Lynn Olson that Spatial Audio Lab is producing) NOTE: I am building the last two of these. com. com Website: www. $2999, walnut case, Using the BA-3 gain stage (“Front-end”) as a line stage preamp. 0) - Circuit Although there are many pre-amp / line stage designs all over the Internet and vintage printed articles, most of the better ones use a cathode follower or have an output impedance <1kohm. Quicksilver Line Stage Preamp - with original box - original owner - appx 3 years old - designed and manufactured in the USA - Comes with 2X Mullard NOS 12AT7 tubes Will ship Venmo/Cashapp for local pickup payment Paypal payment if I ship it to you +shipping No trades Very simple circuit, this preamp sounds incredilble. The Aikidos require two tubes per channel, four dual triodes for a stereo preamp. Ron Sutherland told me that his design brief for The Direct Line Stage was to get close to the performance of "cost-no This is a very capable full featured all-tube preamp from USA maker Conrad Johnson. What is the input sensitivity of your amplifier. They may be from the same company or not. I'm thinking about building a preamp and have several tubes on hand which I would like to use. Krell Phantom III Line Stage Preamp - Complete and Like New Sale price$3,499. Design Implementation Audio Circuits. Jump to Latest M. need diy tube preamp (line-stage) recommendation and general tube advice . Only nine of the unit's 19 tubes are used for the main line-stage circuit. $2000 should, and can, buy a lot of preamplifier—there's awfully fierce competition at that price point. Tom, please read the thread "26 Preamp" to see how this is done correctly. I'm after the ARC brand due to it's noted dynamics and clarity. Many builders manage with 1times and a few have a requirement for 2times and/or 4times. A line stage preamp is an essential component of any serious audio system, and there are several reasons why you need one: Signal amplification: A line stage preamp is necessary to amplify the low-level audio signal from your source device to a level that is strong enough to drive your power amplifier or active speakers. After adjustment of voltages and operating points, I was impressed by the increased detail and resolution brought forth by replacing the Allen-Bradley plate load resistors while retaining the sonic aura I've come to treasure from my Bruce Berman-derived The ET6 line-stage is a "baby” version of our flagship line-stage preamplifier, the GAT. Legend Audio Design 2430 Fifth Street Unit G & H Berkeley, CA 94710 Phone: (800) 783-7360. Pre-Amplifier with transformer coupling ( triple C core) , M2 Power Supply 6×5/ecl82 $ 2,500. com: Current Issue Equipment Reviews; I'm in the market for a used Audio Research Line Stage preamp and was wondering if anybody with experience on the following models could help me as to which you might feel would be the best sounding model. With almost 10 times the output current capability of the previous Line Stage it will drive any amplifier input impedance and interconnect cable with ease. 00: CT Oct 23, 2024: 12 : FOR SALE: Shindo Laboratory Vosne-Romanee-L Stereo Tube Preamplifier: $12500. simaudio. With almost 10 times the output current capability of the previous Line Stage it will drive any amplifier input impedance This active line-stage preamp (it has no phono section) is available from Acoustic Sounds for $3000. A full preamplifier might include source selection for several inputs and also tone controls and balance and so on. The Zen, Bride of Zen, and Son of Zen have been explorations in how much objective and subjective performance can be achieved with a April / May 2010 Coincident Statement Line Stage Glorious music from this Statement Line Stage. New for the 1. It uses only one triode tube section of a The Rhythm line stage evolution includes the 1. The other ten tubes are used at The Tube's inputs -- five inputs, one tube for each channel. The ECC82 type is more suitable for RF applications (oscillator/buffers, Staging was a toss up, with the Transcendent preamp being a bit forward and slightly more real-sounding, and the L-1 being more accurate but also a bit sterile in comparison. They are intended to fuel that interest. But would it be able to deliver 17 dB of gain. See my review here. Tube Line Stage Preamp to Drive Class D Amp The Nad M22 input impedance is a feeble 17kohms as are most Class-D's, be careful with tube preamps as most like much higher than that, tube preamps that have paralleled cathode follower output stages "maybe" low enough in output impedance to do the job, Rear board FSM MC stage: 2 x 12AX7 or 6072 if you want. E-mail: info@legendaudio. 7uf Clarity caps on output #1. Designed, assembled, and tested in the USA using USA and imported components. Joined 2009. The Line 3, as its name implies, is a line-stage preamp, but it is also at the forefront of a new type of component, the full-feature preamp. such as long chain interactions between their feedback loops which tend to coarsen the The Coral line stage preamp offers the best price/performance in the industry, while maintaining the accuracy and musicality you expect from a Wyetech Labs product. I sourced the schematic from the late Wim Bouwman (Mr Valve) in South Africa. There is no line stage or passive preamp currently available that surpasses the Statement’s combination of performance and build quality. While lab experimenting, we happened to stumble upon an observation of stupendous consequences that would have seemed impossible beforehand. The Coral uses a grounded grid configuration which we deem to be the best possible circuit topology for line level amplification This circuit maintains an exceptional Folks this is an excellent sounding preamp & by virtue of its simple design & superb engineering gives it a wonderful full sounding presentation. The issue of how to run Star Grounding for the audio ground comes The line stage of the RPA uses ECC82, but since the sub is the same, you can copy all values and make it with the 6SN7. E-mail: placete@aol. Image. Hello friends, Many years in ago, in 2006, I built this 6SN7 preamp. In 1973, the SP3 was hailed by every major critic as the best preamplifier available, and this pursuit has continued ever since. This line stage is intended for my 45 SET amplifier which has 47K as input impedance. Thread starter rmgvs; Start date 2006-04-11 5:58 pm; Status Not open for further replies. The Statement Line Amplifier is a high current, low impedance, balanced Class A1 triode vacuum tube amplifier. Don Sachs Model 2 Preamp in cherry wood. Arch Nemesis; Audio, Distortion and Feedback; Burning Amplifier # 1; Burning Amplifier # 2; Balanced Zen Line Stage / Nelson Pass / 1997 Legend Audio LAD-L2 Line-Stage Preamp Price: $4495 Warranty: Three years parts and labor. I personally used a good quality passive line stage for over a year and finally switched back to an active one. The LP-33 phono stage uses a separate power supply and my two review units are finished in the unique Line Magnetic-typical laboratory-style grey hammered paint. Their first preamp that offered remote control functionality. Mir Line Stage Preamplifier Remote Control Option – $100. It serves as your control center of your stereo system The phono stage in a preamplifier takes the minute signal received from the tonearm lead and amplifies/processes the signal so it can be heard at normal levels. legendaudio. Thread starter Mike C; Start date 2003-11-24 11:35 am; Status Not open for further replies. 5 dB resolution. See more A line stage preamp, also known as a preamplifier or preamp, is an electronic device that amplifies low-level audio signals from a source device, such as a CD player or A line stage preamp is a preamplifier that switches between your high signal sources such as CD player, tuner, etc, offers volume control. With almost 10 times the output current capability of the previous Line Stage model, it will drive any amplifier input impedance and interconnect cable with Then again, how much info does one really need for a phono preamp? After all: the proof of the pudding is in the eating. All wayne's line stage is just BEGGING for the 6 transistors, Mir Line Stage Preamplifier Stereo Balanced Input (2 stereo pairs) Option – $250. Discontinued. Hubert, Quebec Canada J3Y 8Y6 Phone: (450) 445-0032 Fax: (450) 445-6626. The amp I am thinking about using is the 6BM8 in Super Triode mode. Audio Graffiti €1,650 Aug 30, 2022 Audio Graffiti QUICKSILVER > MONO AMP 8417 Audio Graffiti €1,700 Feb 19, 2021 US Audio How it all started - the TRAM line stage from DIY-HiFiSupply, Hong Kong. Preamplifier. Call to schedule an audition or to order a one today. I have a stand alone phono pre and a phono and line stage all in one. The Audio Innovations L2 line stage preamp was introduced in 1992. This design, in essence I believe, was being built by Jeff Korneff and was given what You can use this preamp as a line stage and can drive hard loads. Something special i Borrowing several areas of design and circuitry from the multi-chassis, top-to-the-line Pass Lab XS line stage preamplifier, the XP-12 is the ultimate expression of trickle-down technology. The result was a hideously complex and astronomically expensive phono stage, the Io; and a Reference line stage, the Callisto. I ordered the boards for the Aikido Noval (9-pin) line stage and complimentary PS-21 power supply, both of which come with components and instruction manual. Current. You are right inasmuch as the So, I recorded a sample here. Transparency, width & depth are very good for a preamp in this price range. The CD may have rid us of the preamplifier as a necessity, but not all line-level sources are compatible, and some gain may be required. I used my guitar connected to a Zoom Pedal G1XN to simulate the pedals path that he have there. I tried many variations with CCSs in plate and cathode positions but went back to resistors. The popularity of the Zen projects points out the interest in very simple linear circuits. Nina Mu Stage Preamp - Circuit and Details. 3. phomchick. This preamplifier will enhance your sound experience whether you are using solid state amps or tube amps. I have a friend who is an absolute genius when it comes to tube and solid state audio. The EVO 400 is not only PrimaLuna’s best line preamp offering ever, but it also holds its own against ultra-high-end competition. Interstage trafos: Origin not known. The award-winning Benchmark LA4 may be the most transparent line-level preamplifier available at any price. 2cm) tall: Weight: System sounds pretty good, but as much as I love the sound of the Apollon, it benefits a lot from having a tube preamplifier. com Help. Reworking 6SN7 Line Stage Preamp. 00: CA Oct 22 Audio Research's first 21st-century, audiophile-quality line-stage preamplifier combines retro-tech vacuum-tube amplification and power-supply circuitry with innovative, remote-controlled gain, balance, tape monitoring, and signal routing. It took the remaining two months to figure out how to make that happen. Line Stage Preamplifier. Presence Audio was then dropped and First Sound adapted to represent both the active and passive preamps. Schematic of the Main PCB Preamp, 1 of 2 (Audio Innovations, 1992). need diy tube preamp (line-stage) recommendation and general tube advice. Review By Rick Becker Within the first minute of listening to the Coincident Statement I realized that this is a very special preamplifier and that I would have to own the review sample. 00 Free Shipping! Quantity. You need to realise that Kondo has had several Models under the general "M7" designation. If it has a phono in it, it is still has a line stage. The 100% analog signal path features a pair of fully-balanced relay-controlled attenuators with 256 steps and 0. I seldom build or use a preamp or line amp in my system , not even in my own DIY R2R DAC. I received this preamp new from Quicksilver in November 2019. I got this preamp from the original owner who purchased it new. Musical Fidelity MVT mk3 preamp line-stage. Warranty: Ten years parts and labor. I used to have an Aiyima T7 preamplifier with WE396A tubes instead of the Elekit. The midrange accuracy of the L-1 is superb, but the Back in the late 1990s Decware's second product was a reference level line stage called the ZTPRE. The first product was our 2 watt amplifier -- that obviously would have a limited market. Outside dimensions: 12. It offers five line-level (RCA) inputs and two outputs: one RCA, the other XLR. Bass is tight and extremely rich -- that surprised me the most. Professional Assembly and Testing – $400. The gain was somewhat high though. It is very similar to 417 tube but has different The first stage is 1. First off I built a line stage preamp, which i really liked, but which didn't actually provide any useful function because all of my music is on the black plastic, still no phonostage. As a line-stage preamplifier, it is at the very top of the heap. Absolutely transparent, the Line Stage is well-built, straightforward, and does what it says on the tin. Go. The component values here are not the values in the GG preamp. Add to cart. Some designers of the Line Level Preamps can offer different gain for different line inputs, but if you have something like this is must be stated in the manual. Superb Preamplifier REF 6SE DISCOVER Stereo Power Amplifier REF 160S DISCOVER Integrated Amplifier I/50 DISCOVER. 1 of 2 Immerse yourself in the original recorded space. And, folks, this pudding sure is nice. rmgvs. admin; February 16, 2019; Vacuum Tube Amplifier; This is my DIY 6N16B line stage board. Setup: I initially installed the InnerSound line stage in place of my custom AHT tube preamp, in my Plateau equipment rack. b. Lots of preamp stages in amps use 12AX7s which have a mu of 100 and use AC to heat them. The surround I ordered a custom spec'ed Don Sachs Model 2 line stage (preamp) 12 weeks ago and it is finally done and will be shipped out to me tomorrow. FOR SALE: Quicksilver Audio line stage preamp: $925. We’ve been getting great feedback from purchasers of Allnic’s new and smallest line-stage preamp, the L-6500, and had a terrific first Statement Line Preamplifier. Designed by the Swiss team of Florian Cossy and Thierry Heeb, the L1 is a model of timbral neutrality, high transient This line stage from Greece uses a single high-transconductance, twin-triode, E88CC tube per channel without any loop feedback to give a high maximum gain of 21dB. Please do tell me what I am missing here. The VAC Master Preamplifier outperforms every other preamplifier, A line stage as noted above, is the part of the preamp which take amplified or equalized signals from lower signal sources (various phono sections, tape head) or line level sources (tape play out from the tape deck electronics, tuner, Auxillary, CD/DVD audio) and then can switch between them into the line stage. Eight of these are 6922/E88CC dual triodes; there is also a single 12AU7/ECC82. Since then the active line stage has steadily progressed to the current MkIII version I had for review. A number of concerns determined the design of the Preamplifier, in addition to the adherence to dual-mono Reference line stage preamplifier. Is it a better solution to use a 12AT7 mu-follower (DN2540 plate load) DC-coupled to a MOSFET source follower, with NFB to the 12AT7 grid to reduce the gain to 9dB? Depends on what you want your line stage to do. However, this is my first tube build, so I thought it would be best to build a low voltage line stage preamp first - using ecc86 (6gm8) tubes. 2006-04-11 5:58 pm #1 Generally, Line Stage refers to a preamp or portion of a preamp that contains active circuitry to buffer or amplify a line-level signal. It’s his latest iteration with an OLED display and 64 step Khozmo attenuator with input relay switching. I connect the Zoom to the 12AU7 line-stage preamp, I used the same configuration from the schematic above. How much money are you prepared to spend on parts? then: a. Great sounding boards. Jump to Latest R. What is the best schematic for phono RIAA, of course it is LCR, LCR make very low signal loss, sound is more musical, beautiful note. In addition, a newly designed audio choke increases power and dynamics. The "Full preamp" always used a 6072A Linestage with a Voltage Amp/Cathode follower combo and a variety of Phonostages, first 6072A Cascode into passive RIAA into 6072A and now ECC83/12AX7 with NFB EQ. QUICKSILVER LINE STAGE PREAMPlifier The Quicksilver Line stage preamplifier embodies the Quicksilver philosophy of musicality, simplicity, reliability, and solid construction. 5dB) That is enormous for a line level gain stage. Phones from 300 ohms tap. I guess that back in the day, most "full function" preamps even had With the debut of the new L3B Line Stage the Legend Continues. Preamplifiers / Buffers / Phono Stages / Input Stages Power Amplifiers / Output Stages Headphone Amplifiers Power Supplies Crossovers / Equalizers Auxiliary Circuits / Experimental Platforms Then making the right adjustments. In some circles, you can't even buy a power cord for five grand, let alone a line stage that holds its own with some of the world's finest by the known brands. com: Current Issue Equipment Reviews; All Contents Quicksilver Line Stage Preamp. I have some 12AU7, 12AX7, 12BH7A, 6SN7, and 5687. Mcintosh C2700 $5000. 1 ohm resistors R16 or R17 overheats. Yes, really. 12-30-2003 at 09:17pm . The line stage got put on a shelf while I continued to use integrated amps, which by this point I was getting rather good at recapping. The preamplifier has one stage only, and all the Single-Ended Line Stage Preamp Modules. I should have it hand by Tuesday. It utilizes a super capable relay based resistive volume control instead of a conventional InnerSound Line Stage Preamplifier Frank Alles 26 June 2001 Specifications Inputs: 6 line level, including tape and video processor loops; one balanced XLROutputs: 4 line level (2 fixed level outputs, one variable RCA-type, one XLR balanced) All outputs may be used simultaneouslyFrequency Response: -3 dB at 5 Hz and 200 kHzNoise: Greater than 100 Tube Power Amp Schematic of Triode Preamplifier with 37 and 76 Pre Wartubes The American prewar-types 37 and 76 have the same heater (6,3V / 0,3A) Just draw a straight line between those points and move it parallel so that it crosses the operating point. The boards were already stuffed, so all I needed was the power supply xformer. Most commercial approaches I've looked at so far Source & Line Analogue Source Analog Line Level Digital Source Digital Line Level PC Based. 2, and 1. SimAudio Moon P-5 Line-Stage Preamp Price: $3995 USD. With a retail price of $6,100, the it provides a good taste of the uber-sophisticated XS line stage preamplifier for a fraction of the price. It will sound way, way, better. Discover why Audio Research enjoys a long tradition of producing the finest preamplifiers in the world. mejames. L3x Pre-Amplifier Triple C-Core. 1 Placette Audio Line-Stage Preamp and Remote Volume Control Prices: Line-Stage Preamp, $3000 USD; Remote Volume Control, $1000 USD. placetteaudio. Inputs 1 and 2 are balanced, with the remaining three Acurus L10 Audiophile Line Stage Preamplifier -Monidal -Dual RCA Outputs -Preamp. SME tonearm lead => Lehmann Black Cube Phono Preamplifier => BAT VK30 Line Stage Preamplifier=> Bat VK500 Amplifier . Specifications. If you are just doing the line stage, the grounding issues become simpler. I don't need any gain so a buffer stage or a low gain design is what I'm after. The Line Stage 76 Preamplifier is engineered to overcome the challenge of microphonics typically associated with the 76 tube. 8 (76). The internal shielded cable has been eliminated, output impedance has been lowered and the power supply filtering and capacitance have been increased. I used the preamp with a solid state power amplifier, and it sounded really good. 75 in (32. 00; Description: Aikido Dual Mono Octal PCBs; Manufacturer URL: Glass-Ware; Model Picture: View. Included in the Line 3's eight line inputs and five line outputs (two of the inputs and two of the outputs are balanced) are a tape loop and a surround-sound-processor loop. A 2A3 can not do it when it’s mu is only 4. Amplifying stage: 2 x 5687 JAN Philips. New Products & Super Triode Amplifiers They offer a very nice looking preamp board too. 4 sets of stereo inputs and 2 parallel sets of outputs with 5 position variable output 6N16B Line Stage Preamp. Audible Illusions Modulus IIc Tube Preamplifier for pickup Canuck Audio Mart CA$900 5% Mar 28, Audible Illusions modulus L3A line stage pre amp Canuck Audio Mart CA$2,800 Jan 4, 2025 US Audio Mart Audible Illusions L-1 Tube PreAmp and Recapped with Tubes US Audio Mart $1,100 Nov 29, 2024 Melos has a real winner in the SHA-Gold. The gain the preamp needs is then 5V / 0. 1 x 12AU7 for the LINE gain cascade stage 1 x 12AT7 for the LINE and RECORD output cathode followers next to the two big WIMA caps. The ampsandsound Yellowstone Vacuum Tube Preamplifier—A Geyser Spew of Musical Greatness – includes MM/MC input and remote control volume/mute along with several choices of N. There is also a range of cables from the company. e. Next Last. The latest version of the Quicksilver Line Stage offers a simplified switching and signal path. As Joseph Esmilla says, this was inspired by Bruce Berman’s Homebrew Type 76 Preamplifier described in Sound Practices #13. 2018-10-29 8:08 pm #5 2018-10-29 8:08 pm #5 I will also build this when I get some time. REVIEW: Glass-Ware Aikido Line Stage Kit Preamplifier (Tube) Model: Aikido Line Stage Kit; Category: Preamplifier (Tube) Suggested Retail Price: $149. A great tube preamp on the other hand is Which brings us, in ways that will hopefully become apparent, to the latest piece of gear to fall within the Serinus reviewing sights, Audio Research Corporation's new, top-of-the-line single-chassis line-stage preamplifier I've been looking at various preamp line stages for a while before I start to build a prototype on the bench. I built a similar constant current 6SN7 preamp and really like it with cheap 2092 power amps. Reference 6SE Line-Stage. Our innovative solution incorporates moveable and independent extend plates and dampers, ensuring that the audio output remains pristine and unaffected by external vibrations. Just looked up a CJ ET3 SE and it is called a preamp which has a linestage even when the phono is a optional extra. In the end, after the C2, I added a B500K pot, with the C2 on right, ground on left and output on the middle. We have developed the Jade to mimic it as close as possible, while making it more affordable to a wider audience. Read 1065 times. I missed the energy. since i only violated half the rule, perhaps someone will try this. , there are no output Line stage preamplifier. After having been on the market less than a year the Opal preamp has been accepted as the leading edge in sound reproduction. Warranty: Ten years parts and labor for both. Life used to be simple. Review by amioutaline? on January 23, 2009 at 19:07:50 Interesting and well engineered passive preamp, utilizing autoformers to increase and decrease line volume. the m-m version of the Preamplifier contains a Gryphon Phono Stage plus line-amp. Are you planning on keeping this amplifier. A single stage 12B4 preamp is really nice too. Audible Illusions’ best effort to date and one of the best line preamps DO has auditioned over the years at any price: audible illusions on a grand scale! PrimaLuna EVO 400 $5295. I have lost my notes on the This balanced line stage is the classic "differential pair" topology with two identical gain devices connected to develop voltage gain from a differential voltage input. 4cm) deep 18. P. 2017-04 Prototype OTOMON LAB LCR preamp with phono stage and line stage separated power supply You can order MC step up transformer so that you can use with MC cartridges. Details; Discussions; Posts; This discussion; Message User; 986 posts. With voltage gain provided by a triode vacuum-tube, the zero-feedback line-stage circuit of the ET6, along with its DC voltage regulators, closely replicates the circuit of the GAT. c. Joined 2016. Jr. The ECC83 is a high gain, high plate resistance, low plate current dual triode. It is just good design engineering to have a low output impedance. [callout style=”silver” font_size=”16px”] Beautiful, elegant, pristine. Quicksilver Audio Line Stage Preamp Tube for sale. The only component in my amplification chain not built my me is the preamp. MSRP: $27,000 (714) 630-4100 - Anaheim, CA -- You’ll also find the same premium resistors and exotic capacitors employed in the Statement Phono Stage. A few really good "full function" preamps are available today. zvskvf tjmelmd ppmvb lhgo sbrio jrkft xkyndt vfogfd hddcq eeku