preamplifier

  1. Jake O Bob

    Yamaha C4 phone jack connector

    Trying to replace a phone jack that has a cracked enclosure on my C4 preamp. I ordered a new one from mouser but not sure if it's going to work since it only has 7 pins. I'm not able to find one with 9 pins like the original. Is there a way to still use the new 7 pin version without loosing...
  2. Schmurpy

    Hitachi HMA 7500/8500MKII power meters needed.

    Hello, Hitachi HMA 7500/8500MKII power meters needed.
  3. N

    Luxman TP-117 locked on CD source

    Hello all. having a problem with my Luxman TP-117. Just pulled this out to try with a M113 using JBL 4312c's and a Strata III subwoofer. After running perfectly for a few weeks the source is now locked into CD and cannot be changed either manually or via the remote. Checked monitor buttons, no...
  4. Helius

    Which version of the C20 do you prefer?

    Hey all, I'm a noob on this forum and I would like to ask you, which Version of the C20 is most appealing to you? As far as I understand it, there are three versions... (?) Thanks & best wishes, Michael
  5. sheiku

    noob question: mixing tube preamp + ss amp

    Hi to all, and glad i am part of this wonderful forum. Dan here, After many year of using only ss amps i want to enter with timidity in the word of tube: I own only ss amplifiers and very big and inefficient speakers i cannot drive them only with tube amplifiers - as Quadral Vulkan mk2 (8 ohm...
  6. 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...
  7. X

    Marantz 2252b relay wont engage… oddly. HELP

    Just picked up this 2252b receiver and the relay doesnt engage 99% of the time. It will engage after an elongated period of time under “aux”. Turn up the volume under aux and it disengages. If started and engaged under “aux” once switched over to FM for example the relay immediately disengages...
  8. david winter

    C-70: mistake around zeners near T211/T212 ?

    Hello, I am repairing a nice C-70 pre. Between T211 ant T212 (symetrical sub-power), are two 27V zener diodes (D126 / D127). The glue used to stick the two 220/35 capacitors corroded both zeners and one had a broken leg. No reference is visible on them, so I took the schematic and realized that...
  9. slong02

    MTX Soundcraftsmen P100 Preamp

    I need a Preamplifier for a bunch of Amplifiers I have acquired to test and decide what to keep and what to sell. I came across a Soundcraftsmen P100 Preamplifier for sale in my area. Considering it but trying to do some due diligence, Would like to know is it any good? How is the quality of...
  10. "ItsTooLoud"

    I need a phono preamp

    Friends! I bought my first turntable recently. I've had an important-to-me record over ten years that I've never heard. Since I bought my $5.00 British turntable I've found several more local thrift that I believe I'll enjoy! Neither receiver in my home speaks vinyl. I think I need a phono...
  11. E

    pro-ject maia preamplifier

    Hello. I am looking for a budget, compact, all-in-one type of preamplifier that can be coupled with my Eve SC207 studio monitors. It doesn't need to be a great one. If the sound is clear enough for listening music and does what it is supposed to do, I would be fine with it. Thanks for the...
  12. E

    Pro-ject maia preamplifier

    Hello. I am looking for a budget, compact, all-in-one type of preamplifier that can be coupled with my Eve SC207 studio monitors. It doesn't need to be a great one. If the sound is clear enough for listening music and does what it is supposed to do, I would be fine with it. Thanks for the...
  13. klangtausch

    Sansui CA-3000

    Looking for your opinions on the mighty SANSUI CA-3000 control amplifier. Who has experience with this one? How good is it in comparison to "the best" vintage preamps out there? If compared to the likes of Sony, Threshold, Yamaha, ML... Of course, it comes down to personal taste. But I need...
  14. D

    Tube Preamp please help me choose

    Hi Everyone, Still new here and learning, the help from this site has been amazing! I am trying to choose between 3 Preamplifiers and could use some help again. My power amp's are original Dynaco MK3 monoblocks unmodded and speakers are Wilson Audio Watt2 puppy 3's. I use a Pro-Ject Pre Box...
  15. M

    Jadis JP80MC info needed

    Hello friends. So I made my Defy 7 work, and it sounds great. But now my vintage JP80MC has developed noise in the left channel only of its MC stage. It’s “motor-boating”, which to me indicates either a bad capacitor, or a bad regulator. On my unit regulator markings are sanded off. On later...
  16. R

    Aragon Aurum monoblocks?

    I’ve highlighted and attached the image from the Aragon fanpage. Thanks to them, here’s a not oft mentioned detail!
  17. Leestereo

    Leestereo's Restoration and Upgrade of a Sansui CA-3000

    At the request of AK member @greymatter, a very nice Sansui CA-3000 was the subject of a complete restoration and upgrade. Part 1: F-2486 Equalizer (Phono) Circuit Board In the CA-3000, the phono stage consists of a pair of F-2486 boards, one for each channel. Signal Path Components The...
  18. D

    Need advice - Current best value (the sweet spot) for an audiophile preamplifier/processor

    Seeking advice. My Sunfire Theater Grand Processor (gen 1) is having problems and there are simply too many choices available. Has anyone recently done this research and come up with a best choice or two? I can pick up one of the last generation Sunfire models for $600-1000, but want to exercise...
  19. Stephen W

    I have a Dynaco Pat5 MOSFET...

    Currently I am using the Class A preamp section of an Onkyo amplifier with my Dynaco ST70 amplifier. I have a Pat5 that is a bit old and noisy. Am I better off cleaning up or restoring the PAT5 or staying with my current setup?
  20. goldswimmerb

    Marantz 3600 Restoration

    Figured I'd start posting the restorations/rebuilds that I am proud of here. I dont keep much of the equipment I get as I am happy with what I have and dont need a room full of marantz (though I'd like one). This 3600 came off of ebay, along with a 250M with a destroyed channel for $700 or so...
  21. MisterDK

    Freya+ preamp users?

    Hey folks! Is anyone out there using the new Schiit Freya+ preamp? Just wondering what people think of theirs as far as sound quality. I know not many are in circulation yet, but thought I’d ask. I’m presently using their original Saga passive pre and while it sounds clear and clean, I want...
  22. J

    Comparing two preamps

    I am currently using a Mark Levinson #28 preamp. Have a chance to upgrade to a Audio Research Ref 5. Would it be a substantial improvement to the sound? I’m also using an Audio Research Ref 75 SE power amp. Thank you
  23. PROJECT 2501

    Which preamps go with the model 32?

    Im specifically looking for marantz preamps that are the same size, face plate color, and if necessary... Impedance compatible.. So far i know of the model 24 and 33 Speaking of the model 24... Same question but about tuners this time. Which tuners are the same size and color of the model 32...
  24. Sam08861

    Anyone have a recommended capacitor list for the Technics 9070?

    Just got one of these, but has the original electrolytic caps. I have the service manual and can see which are electrolytics and of these, which are non polar. 1. What I don't know how to figure out here is if any should be low leakage/low esr caps. Any suggestions which ones or what to look...
  25. B

    Heathkit AA141 preamp 5 - 12AX7 version - anyone with experience

    I've had a Dynaco Pas 2 for a little while, and have been very happy with it. It has the tone controls out and a new rectifier and new caps and all the hoop-lah ... I use it with a Bob Latino ST70 and an original ST70. I just picked up a Heathkit AA141 and hope to emulate the mods/updates...
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