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tube preamp

  1. P

    BK Partners A205 amplifier and P205 control unit (1959)

    Hi everyone! I’ve got a rare B.K. Partners A205 amplifier and P205 control unit (circa 1959). The preamp (S/N 237) features an interesting tube lineup: three EF86s and one ECC83, including Phono stage, Tone, Presence, and Rumble controls. I'm currently restoring it and looking for a schematic or...
    • Parider
    • Thread
    • 1959 a205 b.k. ef86 p205 tube preamp
    • Replies: 0
    • Forum: Tube Audio
  2. Carbsandcaps

    $40 tube preamp/ tone control (with some spare parts)

    I was messing around on alibaba one day looking for some tube projects and came across this tone control board. It takes 12ax7 or 6p1 tubes and has a treble and bass control. Assembled for $17? I’ll take it! It recommended a 280v power supply so I went looking for one of those too and found a...
  3. hrudulv

    Which tube preamp kit to build? Elekit TU-8500 VS Bottlehead Moreplay

    I will try to build my first ever kit. Currently I am practicing soldering. Please advice and thank you. Which kit would sound better and easier to build... TIA
  4. .nilo.

    Ear 834p phono bass slow indistinct?

    Hi I am considering purchasing the ear phono classic however based on commemts by reviewer Larry Cox at positive feedback I am doubting if I should get it: “Bass was perhaps a little overfull, perhaps a bit indistinct, leading some to assert it sounded a bit slow.” “Do you want the airiest...
  5. B

    1964 Zenith Console tube preamp SS amp left channel went out!

    Hello everyone! I have a 1964 zenith console stereo with a tube preamp and solid-state amp. I’m redoing it for a buddy of mine. When he brought it to me I opened it up cleaned and lubed all pots and switches. Replaced all the burnout lamps with warm white LEDs and installed a DAC to the tape-in...
  6. Oscarshock

    Has anyone heard of Shuguang s200mk before?

    I knew Shuguang was a manufacturer of vacuum tubes but I didn't know they even produced hifi components. I saw this tube preamp online and had only a little information about it so I sought more information from the Chinese website and here is what I got. . This is a tube preamp for the line...
  7. meako

    Nobsound Tube Preamp

    I recently acquired this preamp from Nobsound/Douk Audio. It is based on the Marantz 7 line stage with the Shigeru Wada circuit mod. It had two 12ax7s and two 12au7s from PSVANE. Stock tubes sounded awful. It was very metallic and the bass was really weak. So, I ended up replacing the 12au7s...
    • meako
    • Thread
    • 12au7 12ax7 5814a douk nobsound shigeru wada srpp tube preamp
    • Replies: 34
    • Forum: Tube Audio
  8. Okra

    Tube Preamp w/ Integrated Amp

    Hello... I have an Arcam SA20. I'm currently using the pre-out for my subwoofer and also utilize the HT bypass when watching movies. I love this amp, but I've got a bug I can't shake which is I want to experience the tube sound for music. Before I jump down the speaker hunting rabbit hole, I...
    • Okra
    • Thread
    • arcam integrated amp schiit audio tube preamp
    • Replies: 6
    • Forum: Tube Audio
  9. A

    Tube preamp ground loop issue?

    A friend of mine builds tube preamps. After listening to one of the designs at his house, I had to bring one home it sounded fantastic. Clean, clear and dynamic. No issues...yet. I bring the preamplifier home. I proceed to remove my solid state preamp, and in place of that I put the new tube...
  10. Alfmonster

    MX110z Tube positions and recommendations

    Hello AK, I’m trying to get more familiar with the MX110z and have been a bit confused by the tube positions. Unfortunately most all of the tube ID is gone from the preamp. Is there something to explain this a bit more simpler than the schematic? I’ve also read that the most significant...
    • Alfmonster
    • Thread
    • mcintosh mcintosh mx110z mx110 tube mx110z tube preamp tube rolling preamplifier
    • Replies: 23
    • Forum: McIntosh Audio
  11. C

    Tube Rolling Preamplifier

    Back in December I was building a preamp to replace the headphone amp I use as a preamp and was struck by the idea to implement A/B comparison on the preamp tube by adding in additional preamp tubes and a means of switching between them. The idea worked and since I had not seen this before...
  12. Lost Cause

    Advice on Matching Preamp for MC 2105

    Hoping for some suggestions on a tube preamp to mate with an MC 2105, hooked up to a pair of Cornwalls. Targeting around $300 to $800, but budget is not fixed. Interested in anything, really, from cheap modern China stuff (like Douk or the "based on" knockoffs) to used and vintage (though...
  13. Alfmonster

    McIntosh MX110Z and C20 (later model)

    Hi, I've been wanting to get a tube preamp for quite some time and am now able to go either way between an MX110Z or a c20. Both have been looked over and meets or exceeds original specs. Perhaps what is causing a pause from going with the mx110z is the cosmetics. The gold lettering is...
    • Alfmonster
    • Thread
    • c20 mc225 mcintosh mcintosh c20 mcintosh mc225 mcintosh mx110z mr78 mx110 mx110 tube tube preamp
    • Replies: 18
    • Forum: Tube Audio
  14. D

    What do you think about a CJ PV9A with a Mcintosh MC225

    Hi Everyone, I was wondering if anyone can help me determine if a Conrad Johnson PV9A preamp would be a good match for my Mcintosh MC225? I am new at all this and could use some help. I am worried about matching the components and don't have enough knowledge or experience to make the decision...
    • DenverJW
    • Thread
    • conrad johnson harbeth mc225 mcintosh pv9a tube preamp tube preamplifier zu audio
    • Replies: 8
    • Forum: McIntosh Audio
  15. TelegraAudio

    Harsh Soviet appliances and parts.

    Have you come across parts or devices released in the USSR? What did you use them for?
  16. allhartfidelity

    NIB (new in box) Fisher 400cx-2 how does that happen?

    New in box, no sign of it ever being plugged in. How does that happen? Some extraordinary circumstances to buy a preamp in 1963 and never plug it in. It baffles the mind. While i sold a pristine 400cx-2 a while back which had rare use, i never thought i would find one in better shape. Let...
  17. angelaudio

    McIntosh AE-2 Preamplifier & MC-30 Monoblock

    Hello fellow AK’ers I hope you all find yourselves well. Today I scored some vintage McIntosh tube gear (my first ever tube setup) and I need everyone’s McIntosh wisdom and knowledge to guide me through proper setup to attain proper audio bliss:) First off, the gentleman who sold me these two...
    • angelaudio
    • Thread
    • ae-2 mc30 mono block summing down telefunken tube power amp tube preamp
    • Replies: 12
    • Forum: McIntosh Audio
  18. Zach Nelson

    Preamp for Zenith 7b31

    I just got this sweet sounding 7b31 that has been completely rebuilt and am wondering what would be a good preamp to use that would pair nicely. Right now I'm just using preouts from my Onkyo A5, but would like something to complete this amp on its own. Open to ideas. Tube or SS. Only will be...
  19. N

    Dared SL-2000A w/ SS Amp Help

    Hey y'all, So I recently just bought my first tube preamp, a Dared SL-2000A, really excited to get it up and running. I set it up the other day with my SS Amp, a Yamaha R-S202...I know it's not a good amp, and I knew before buying this preamp that I might have to change the amp out eventually...
    • nickwb
    • Thread
    • beginner dared fluance solid state amplifier tube preamp tube preamplifier tube preamps
    • Replies: 0
    • Forum: Tube Audio
  20. thr33p4c

    Harman Kardon Citation I - To Mod or Not To Mod?

    Fate has blessed me with two Harmon Kardon Citation I tube preamps. One was beautifully built but also "well loved." The other was drastically modified over the years and is missing a lot of original parts. The "well loved" unit had a pretty messed up face plate, broken balance pot...
    • thr33p4c
    • Thread
    • citation citation i harman kardon led modification mods tube tube preamp
    • Replies: 21
    • Forum: Tube Audio
  21. B

    #27 tube preamp schematic

    Hi, I have a pair of used #27 tube tested in good condition. I'd like to build a preamp with the tubes but I haven't schematic yet. Can anyone here help me to find #27 tube preamp schematic? Thank's
    • Biwado
    • Thread
    • preamp schematic tube preamp type #27 tube
    • Replies: 5
    • Forum: Tube Audio
  22. NJAudioGuy

    Is there any difference between tubes labelled CBS/Hytron vs Hytron only?

    These NOS tubes seem to still be available for the 6SN7 and the JAN 5692 variants. Some tubes are labeled CBS/Hytron and others labelled Hytron only. Are these the same? I am looking for Schiit Freya preamp so any guidance is greatly appreciated? DC
  23. T

    Solid state with tube pre amp?

    hello everyone, I'm hoping I can find some insight here. I am selling my Yamaha ca-610 II amplifier and have had a couple of trade offers. First one is a technics SA-5600XC plus cash on his end. The second offer is an audio note m zero tube pre amp. I've never owned anything tubed before but I...
  24. Byron M.

    Marantz 7 Pre-Amplifiers Different Types ?

    I Know That 7,7c are tube types and 7t is solid state. But on the Tube Types there is a Small Face Plate and A large Faceplate That Some Call 7cr & 7tr but What Is a 7p the rarest of all the Tube Types And Why Rare?
  25. Olivesaxer

    Complete Noob Tube Question

    Good morning AKers, I have gone through about 10 pages of posts on the Tube section and haven't found the answer to the insanely basic question that I am looking for. Got the tube bug after grabbing up a LD MK3 a few months ago. I am currently using a SX1250 (1978ish) pushing two Monitor...
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