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tube

  1. M

    C2700 Preamp tubes difficult to remove

    I’ve got a 5 yr old C2700 preamp with the factory tubes still in it and am upgrading to Rays tubes. I have removed the case top and metal securing strip so they are fully accessible to remove, but when I pull on them they won’t slide out. I’m using a cloth glove and unplugged the unit but is...
  2. scootsity5

    Building a scratch version of Dave Gillespie's 8600 mod

    Hello all, I was told to stop asking questions in the main thread, and instead create my own build thread. So, I am! Here's the deal, a few years ago, we acquired a beat up telefunken console. It was pretty much toast. So, I took out the speakers, turned the turntable drawer into a real...
  3. D

    Tube amp identification

    Apologies for the vagueness, I saw a Tube Amp/Receiver that I fell in love with a couple of years ago, had info on it saved somewhere. Now I cant find it and cant for the life of me remember the brand. It had a unique look, and I am almost certain it had a gold face. AI couldnt help me find it...
  4. VA1DER

    Looking for Bluetooth DAC with vacuum tube buffer/pre-amp

    I am looking for a DAC (hopefully with good bluetooth) with a vacuum tube pre-amp or buffer. Many DACS slash pre-amps use tubes for a "coloration" stage. I am not looking for this - this to me is using a tube to poison the audio. Problem is the signal to noise ratio is so poor searching for...
    • VA1DER
    • Thread
    • 12au7 dac dac amp tube
    • Replies: 9
    • Forum: DACs
  5. J

    Scored a cool GE RC-1671 console w/ Garrard Autoslim TT. What now?

    I got this cool GE console w/ Garrard TT for $20 at an estate sale. It's nice and well-kept, and mostly in working order. Especially nice for playing 78s with the special stylus! Only problems are finicky speed selector and broken 45 changer spindle. I've replaced the latter. Wondering what you...
    • Jimuh
    • Thread
    • autoslim console garrard ge tube
    • Replies: 7
    • Forum: Tube Audio
  6. D

    Amp to pair with lintons?

    Looking into purchasing some Wharfedale Lintons as part of my hifi setup, though I’m a bit torn with what integrated amplifier to use with them. I prefer something that has detail with punch and warmth. I’ve been considering a Yamaha A-S801 (which seems to be a perfect combo for many folks) but...
    • dnova93
    • Thread
    • integrated amp solid state speakers speakers & amps sv236 tube vincent audio wharfedale linton yamaha as801
    • Replies: 2
    • Forum: Solid State
  7. ceylon

    TAVISH DESIGNS SHUT DOWN

    a most brilliant new face in tube audio design is shutting down. the few devices he made--specificaly those 3 phono amps--had a rofoundimpact on the world of tube audio. "AnnouncementJune 27 2025 With great reluctance, I’ve decided to discontinue Tavish Design’s standard catalog of audio...
    • ceylon
    • Thread
    • adagio phono tavish classic tavish design tavish vintage tube
    • Replies: 3
    • Forum: Tube Audio
  8. mcaddie7

    Fisher 800C Restoration Thread

    Met an older gentleman who was about to toss out some old hi-fi gear. Sat and chatted with him for a while and he had some incredible stories. Long story short he insisted zero payment for any of the gear, so amongst other things I received a what appears to be pretty mint Fisher 800C. So...
    • mcaddie7
    • Thread
    • fisher fisher 800-c tube tube receiver
    • Replies: 27
    • Forum: Tube Audio
  9. M

    Oldchen EL34 SE – Tubes light but totally silent. Pin 8 (rectifier socket) → first filter cap (+) reads “OL”. Safe to add a new lead?

    Hi all, my Oldchen EL34 single-ended amp heats up fine but there’s no sound at all (no hiss/hum). What I checked (power off, caps discharged): Heaters OK; all tubes glow. HV secondary looks OK (both rectifier anode leads show similar DC resistance; between them the sum). Key finding: Between...
    • MCR
    • Thread
    • single ended tube tube amp amplifier
    • Replies: 5
    • Forum: Tube Audio
  10. mcaddie7

    Eico 2050 - Adding Loudness switch?

    Hey all, I have an Eico 2050 which I’ve gutted and installed the nicest parts with tightest tolerances I could find. This thing sounds lovely. However, I’d like to change the hi pass filter switch on the front to be a loudness switch for lower listening volumes. Any tips or tricks? I could...
    • mcaddie7
    • Thread
    • eico eico 2050 loudness button tube
    • Replies: 14
    • Forum: Tube Audio
  11. K

    KLH 17 versus University LTV Medallion

    I have the opportunity to pick up locally a pair of KLH 17 or University LTV Medallion for the same price ($200), both in mint condition. The KLH was even recapped but I’m not sure if the University was recently serviced. The seller got them from a tech who said they didn’t need it and they do...
    • klaval
    • Thread
    • klh 17 magnavox sansui 5000x tube tube amp university medalion vintage speaker
    • Replies: 6
    • Forum: Speakers
  12. Pantflapper

    MC30 preamp suggestions

    Hi everyone, So I was fortunate enough to have come across a set of MC30 amplifiers. I am considering a preamp to go with them but unsure what might be a good match. I currently have a C32 that could work in the interim or some vintage receivers but was thinking on trying a fully valve setup...
  13. mcaddie7

    Realistic 40/a Tube Amp Restoration Help

    Hi all, Looking for a schematic for this amp if anyone has it. I have a beautiful Realistic 40/an amp that looks like it has never left a box(it has!) and the owner said it stopped working one day. I found one of the output tubes was blown. I ordered 4 new 6BQ5s and started with my simple...
    • mcaddie7
    • Thread
    • realistic realistic 40/a tube tube amp
    • Replies: 20
    • Forum: Tube Audio
  14. tlann

    HH Scott Stereomaster 340b — Service Advice

    I got a little carried away yesterday morning and accidentally won an auction for a Scott 340b with a nice wood case. I got it for a decent price but will have to pay for shipping — and I have no idea what shape the receiver is in, other than that it's cosmetically pretty good. Even if it starts...
    • tlann
    • Thread
    • hh scott repair repair advice scott scott 340b stereomaster stereomaster 340b tube tube amp
    • Replies: 14
    • Forum: Tube Audio
  15. .nilo.

    Allnic H1201no tube dampers

    Hi I really wanted a phono stage for a long time. Read alot of threads and researched I narrowed my search to an Allnic H1201 while I was saving up money to buy a new one a used unit came up on ebay so I went ahead and bought it being half the price! However now I am kind of dissapointed since...
    • .nilo.
    • Thread
    • phono pre amp tube tube phono preamp tube phonostage
    • Replies: 0
    • Forum: Tube Audio
  16. T

    Marantz 7C repair advice - San Francisco Bay Area

    Hi all, I recently inherited a Marantz 7C. After being assured it worked, I foolishly went to turn it on and the light on the front won’t turn on and doesn’t seem to work. Here are the internals/externals. Would anybody know of a place I can go in San Francisco (or the Bay Area generally) to...
    • tommysully
    • Thread
    • amp bay area marantz marantz 7c repair repair advice repair advice help needed san francisco tube vintage
    • Replies: 11
    • Forum: Marantz Audio
  17. A

    Need Help! Working 1941 - 1942 Sheraton Upright Capehart Panamuse 22M2 FM

    Subject: Help Needed with a Stunning Vintage Find! Hey everyone! I hope you’re all doing well! I’m reaching out because I recently stumbled upon a truly beautiful vintage radio cabinet while searching for a unique piece to use as a vanity in my bathroom. At first, I didn’t realize the treasure...
    • AliciaJ
    • Thread
    • 1941 1942 40’s antique capehart farnsworth panamuse radio cabinet sheraton tube
    • Replies: 9
    • Forum: Dollars and Sense
  18. Just_open_box.jpg

    Just_open_box.jpg

    • Mike244
    • Media item
    • sansui tube
    • Comments: 0
    • Album: Sansui PM-770
  19. vintagefeel

    Sherwood S5000 tube why is does it run so hot

    My Sherwood S-5000 tube amp runs extremely hot, can't touch protective plate without burning fingers. I tried a voltage regulator set at 110v, no luck, still burn fingers. All original tubes except rectifier which is Sovtek 5AR4. Any ideas why it is running so hot? What can I do to make it run...
    • vintagefeel
    • Thread
    • 110 120 hot rectifier s-5000 s5000 sherwood tube vintage voltage regulator
    • Replies: 13
    • Forum: Tube Audio
  20. MattiaM

    Distortion in a Luxman SQ38F

    I recently acquired a Rohde & Schwarz audio analyser and decided to start running all the amplifiers I have through it. One of these amplifiers is a Luxman SQ38F that I recently restored, and that sounds amazing. I will start by saying that valve amps are not something that I am very familiar...
    • MattiaM
    • Thread
    • luxman sq38 thd tube valve
    • Replies: 2
    • Forum: Tube Audio
  21. L

    Sansui 500EA Headphone Question??

    Hi All, Just acquired a Sansui 500EA that has been converted to 120V and had the caps replaced about 4 years ago. I have been looking at all the schematics but cannot figure out how the headphone jack on this unit puts a load on the amp? I would love to use it as both a headphone driver and a...
  22. J

    My dad passed and I found a half assembled DIY preamp without schematics. Any help or advice would be great.

    My dad passed three years ago and I'm picking up the pieces. I didn't know that he left me with this in progress preamp until recently. He also has a phono stage (no pictures in this post), but it's even more incomplete. With a family friend (close friend with my dad), we determined that it is...
    • jwbcp
    • Thread
    • tube tube amp amplifier tube amp build tube amp help
    • Replies: 53
    • Forum: Tube Audio
  23. Isja

    GE Model 402 Power Supply Hum Even With Filters Replaced

    I’ve been working on this old GE Broadcast Band Superhet AA5 receiver from the late 1940s, early 50’s. I decided to get into a full restore instead of just simply servicing it and for a while, all was going well. The light socket had to be replaced as it had internally shorted, which was no big...
    • Isja
    • Thread
    • aa5 reciever superhet tube
    • Replies: 2
    • Forum: Tuners
  24. C

    Tube Amp Buzzing Noise Varying with Volume and Changes Channels

    Hoping to get some help from the tube experts here, let me preface this with I am very new to electrical engineering and DIY audio (as in built a bottlehead crack and that's about it) so apologies for likely some incorrect terminology use. I purchased a unique tube headphone amplifier off...
  25. sean sweeney

    Question on 1959 Crown SXA tube amp power supply, switching noise from half wave rectifiers?? 120hz hum.

    So I got this amp in a trade deal a few weeks ago, and after one issue of basically building it back from scratch, from a blurry schematic from 1960, I still am getting some 120hz hum when the unit is idling, with the inputs shorted. I just replaced the selenium rectifier, and that seemed to...
    • sean sweeney
    • Thread
    • 1959 amp amplifier control crown gcr monitor studio sxa tube
    • Replies: 175
    • Forum: Tube Audio
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