• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

preamp

  1. SAEAl

    Help Needed With A Rotel RTC-970 Preamp

    I have a Rotel RTC-970 Tuner Preamplifier that has several issues that all seem to be related. The obvious operational issue manifests itself as the volume control turning itself down after the unit is on for about 20 minutes. At that point, to turn the unit off, you have to unplug the unit as...
    • SAEAl
    • Thread
    • hot jp4 jp5 preamp regulator rotel u26 voltage
    • Replies: 0
    • Forum: Solid State
  2. J

    How to connect turntable mixer (Xone 92) to the preamp of a HiFi system (Aragon 24k)?

    Hey there, apologies for not being experienced in this area. I have the current system: 2 Technics SL1200 turntables Xone 92 Mixer Aragon 24k Preamp Aragon 4004 (Mark I) Power Amp Infinity Kappa 9 Speakers Is there anyway to bridge the Xone 92 to the Aragon Preamp? I bought the Preamp because...
  3. N

    Need Advice on Picking out a Preamp

    Just upgraded from an ATLP60 to an SL-Q2, so I need a dedicated preamp for around 150 bucks. Looked around online and in person and pretty much the only place with some half decent deals seems to be EBay where I found the following three preamps: Onkyo P301 - 150 Adcom GTP500 - 157 NAD 1600 -...
  4. C

    New preamp or new integrated?

    Hi, I use a MC275 mk.IV and a Clearaudio Ambient TT. Have a Clearaudio Basic riaa in between. Volum is set on the MC275. I also have a preamp, Hegel P20, but have the feeling of it "beeing in the middle" and maybe not in a good way. Speakers are JBL Array 800 Question: Will a new C2800 be a...
  5. mrdrew

    Looking for my first Mac component, preamp

    Morning AK folks and Mcintosh fans, I'm sniffing around to get my first Mcintosh product. I've always been a fan of this classic brand. I spoke with Tom over at http://www.mcintoshaudio.com/, he steered me towards the older equipment for what I was looking for: manual control, classic Mcintosh...
  6. Carbsandcaps

    Tone control pec integrated circuit upgrade.

    Has anyone tried these yet? A guy makes them and sells them on eBay. They take the place of the tone control integrated board and use film caps and close tolerance resistors built on a single board. They’re made for the 400 preamp but I checked the part numbers and they are the same in the...
    • Carbsandcaps
    • Thread
    • fisher fisher 400-cx preamp x-202-b
    • Replies: 10
    • Forum: Fisher
  7. mb21111

    Pioneer SX770 left channel preamp out hiss

    My SX770 has a hissing noise only heard on the preamp RCA out on the left channel. It is the same volume regardless of how loud the volume is turned, and is present regardless of which input is selected. Any idea which transistor may be the culprit? Everything else works perfectly.
    • mb21111
    • Thread
    • channel hiss left channel noise out pioneer pre out preamp sx770 transistor
    • Replies: 4
    • Forum: Solid State
  8. Jake O Bob

    Yamaha C-4 Preamp Recap

    Gone through replacing all caps along with variable resistors on this C-4. Plugged into DBT and the good news is I've got a dim glow. The bad, some smoke came up from the function board near VR123 trimmer resistor. Looks like these 2 resistors are toast (see photo). I think both R257 ( 1.2KΩ )...
    • Jake O Bob
    • Thread
    • c-4 capacitor preamp recap resistor smoke yamaha
    • Replies: 107
    • Forum: Yamaha
  9. anybodyelse

    Combing preamp with tube amp

    I want to add REL HT-1810 subs to my system. But they have only LFE, low-level RCA, or XLR input. Mine Cayin-CS55 only has a speaker out. And before I buy two of the REL Airship II for 350€ each. I thought I could buy a preamp like Denafrips Hestia, and connect the SUB via XLR and the Cayin via...
  10. A

    Yamaha C-65 Preamp Grounding

    Hi all, I picked up a nice M65/C65 stack a month ago. The amp is being worked on, and I've been using the C65 very nicely with my M70. Much of the scratchiness in the tone knobs, input switches, and volume/loudness pot has disappeared with use. But the volume knob's noise has not disappeared...
    • avantbored
    • Thread
    • c60 c65 grounding preamp yamaha
    • Replies: 15
    • Forum: Yamaha
  11. mosfets

    Nikko Beta II preamp re-cap work

    I bought a circa 1978 Nikko Beta II preamp from the internet. The local seller said he was the original owner(he would have been under 10 years old when it was new). The cord was cut and extended, butcher job. Someone took it apart and put it back together with the facial grommet missing from...
    • mosfets
    • Thread
    • beta ii nikko preamp recap and restoration
    • Replies: 2
    • Forum: Solid State
  12. B

    NAD C588

    Hello everyone, I’m new in here and have a couple of semi-pressing issues that I would love it if some of the experts around here would be willing to help me with some info or advice on what my best course of action might be! Thanks in advance for your help… First up I have a NAD-C588 Turntable...
    • Bhilton1
    • Thread
    • nad nad c588 power supply preamp
    • Replies: 10
    • Forum: Turntables
  13. 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...
  14. A

    NAD PP 2e powering up but no sound

    Hello everyone. I'm looking for repair advice. I have a NAD PP 2e preamp and it use to work well, but one day it just stopped producing sound. I'm currently trying to take my SL1510 turntable, go through the preamp and into a Marantz 2270 using the AUX jacks. I've tried it with my other turnable...
  15. mozcho

    Alternatives to Denon AVP-8000 as a Preamp

    I have read that Denon AVP-8000 has a very good DAC, many people, including some Mac owners, are using it as their audio preamp. The problem is, this is a very old model (~1995), would it last that long? To be honest, I am on a budget and am contemplating finding a cheap, good sounding, outdated...
  16. warm_siberia

    An analogue preamp designer question

    Hi everyone, I'm working on a design of analog preamplifier with a fully mechanical controls. It has decent tactile experience, and very nice to play with. At the same time it has precise controls calibration and parametric EQ instead of generic tone control. The front panel is aluminium...
  17. TunerLanding

    Amp and Preamp Separates (Mix or Match??)

    I'm looking to hear about other enthusiasts' experience with hooking up amps and preamps from different series or different manufacturers etc, as opposed to the matching designated pair. I've heard good things about putting a tube preamp with a powerful solid state amplifier for instance...
  18. A

    Nakamichi CA7A-II Volume Control Potentiometer Access

    Forgive a noob, everyone, and the search function is still broken... My Nak CA7A-II preamp has been acting up a bit: 1) Switching inputs produces a quick crackle. OR, more commonly, 2) Adjusting volume (with remote or by hand) OR touching it produces the same crackle. I have not reliably...
  19. S

    Connecting LOMC to Preamp to Amp Phono?

    Hey gang - I've a question about a very specific connection; I've spent a good week scrolling through various sites and not found anything that addresses this specifically, including here . . . but I'm entirely confident that somebody here will know the answer. I'm upgrading my turntable system...
    • Semionaught
    • Thread
    • a-s701 connections lomc mofi nottingham phono preamp spacedeck yamaha
    • Replies: 2
    • Forum: Solid State
  20. AshhBoy_

    dbx cx3-mkI faulty channel repair

    After having my cx3 fixed because of a dead right channel on arrival, I used it daily for about two years with mostly no issues. Two days ago, I fired it up to discover my right channel was presenting a large ac-synced humming noise. I quickly unplugged everything and checked all my wiring, to...
    • AshhBoy_
    • Thread
    • channel failure dbx dbx cx3 operational amplifier output board preamp repair transistor
    • Replies: 4
    • Forum: Solid State
  21. X

    Marantz 2285B No Sound. Preamp Issue help needed.

    Testing this Marantz 2285B, Quick PS board relay engagement which is good. Tested through Main in on back amp section works beautifully. Preamp section is dead. barely any sound at all on the right channel and very distorted. Left Channel is dead. IF I press on the preamp board it will come...
    • xalara76
    • Thread
    • 2285b marantz marantz2265b marantz2285b marantzreceiver noaudio nooutput nosound preamp
    • Replies: 5
    • Forum: Marantz Audio
  22. meako

    Zero Zone Cary SLP-90 clone Preamp

    Just want to share this little gem. A preamp claimed to be based on the Cary SLP-90. This really sounds very good. Highs are very detailed. The mids has this texture and body to it. The lows are very solid and punchy. Currently using 4 black plate 5814a tubes. My system, Advent/1 Speakers NAD...
    • meako
    • Thread
    • cary slp-90 chinese clone preamp tube preamplifier zero zone
    • Replies: 63
    • Forum: Tube Audio
  23. david winter

    Sansui 771: incorrect polarities for C17 / C18 on F-1504 preamp board and schematic ?

    Hi, I have been wondering what caused some low background noise on a 771 which I almost completely restored. Two electrolytics on the F-1504 preamp board (C17 and C18) apparently have incorrect polarities both on the schematic and the pcb silkscreen. They had -5V accross them. The 2SC1313 were...
  24. E

    Bluetooth with no aux input

    I am currently working on a late 70s console. I would like to add bluetooth while continuing to use the original controls. Unfortunately, this model does not have an aux input. I would like to tap into the 8 track and repurpose it as bluetooth. I can't use the wires off the head because it runs...
    • Evergreen72
    • Thread
    • 8 track bluetooth preamp
    • Replies: 1
    • Forum: DIY
  25. B

    Polkaudio RTi10 Floor Speakers - Muddy reproduction issues

    Greetings, I own a pair of polkaudio Rti10 floor speakers and been dealing with a lack of crisp highs and some mid-range deficiencies. I have read threads of other Polk owners grumbling about these issues. I could have sworn that there were updated tweeters available that would improve on the...
    • billed1954
    • Thread
    • amp cp-1057f floor speakers integra m-504 onkyo p-308 preamp rti10
    • Replies: 0
    • Forum: Speakers
Back
Top Bottom