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preamp

  1. trainbuftony

    The "Members Only" Riaa Tube preamp. Gets a walnut cabinet)

    Preamps, a controversial subject, where does a person start? Well suffice to say I'm not convinced that I own the best, and i'm not convinced I ever will. After several experiences building and modifying preamp stages I feel like I have a grasp on what sounds good and what I like. Please bear...
    • trainbuftony
    • Thread
    • diyaudio point2point. preamp riaa tube tube amp tubepreamp turn table vinyl
    • Replies: 61
    • Forum: Tube Audio
  2. T

    Audiotech Massachusetts USA Audio Manufacturer -- anyone know them?

    Hello, I have a couple of Acoustech components: a power amplifier and preamp. The power amp uses 1/4" jacks for input (perhaps progear?) The knobs look McIntosh-like but not a match. It isn't Stereotech. The power-plug looks almost Fisher-like in shape but has an "AT" in the recessed circle...
  3. Brice

    Help with preamp noise/hum

    Hi guys, I am working on an Acro S1001 preamp, and I am facing terrible noise/hum with it. I located where the noise is coming from: the tone control. Here are the symptoms: When the balance it to ground: no noise at all. Dead silent. When the volume is at ground, noise is present. If I...
    • Brice
    • Thread
    • acrosound preamp s1001
    • Replies: 6
    • Forum: Tube Audio
  4. Bob Clay

    Best MC capable Tube Preamp?

    Morning AK Just moved into the realm of MC carts and needless to say i am blown away on a multiple levels. This is a whole new world to me. I am looking for some guidance on what you buys think are the best Tube Preamps under $500? Right now i just have the Project Phono Box S. For the...
  5. mjw21a

    Won a used Linear Tube Audio MicroZOTL 2 on eBay

    Ok, so I ended up winning a used Linear Tube Audio MicroZOTL 2 on eBay. It has the Linear power supply upgrade, remote control and looks to have a longer than standard DC power cable. Even after factoring in shipping and import duty, I'm saving a bit over $1,000 Australian dollars over new so...
    • mjw21a
    • Thread
    • 2 amp headphone linear tube audio lta microzotl pre preamp zotl
    • Replies: 10
    • Forum: Tube Audio
  6. Mike Sweeney

    2245 Pre Amp P700 board

    Every board in this unit has been a challenge at some level :) I think the Karma gods are making up for the last one which was a cake walk. This has blown caps, lift traces, odd transistors with no marks swapped in and then I just found a resistor buried behind on the big ugly caps broken in...
  7. T

    NRG Control Preamplifier

    By chance I have found exactly the aforementioned preamplifier manufactured by NRG Control, namely the PA-1. It is really impressing, literally everything is controlled by relays, not only the input / output switching but also each minuscule volume and balance step. The preamp is thus packed...
  8. U

    Help with chromecast and Sansui 9090

    Hello, I recently purchased a Sansui 9090 and will be streaming Spotify via Chromecast from my iPhone/Laptop. My question has to do with phone volume vs. Sansui volume knob. If my phone volume output is say, 50%, I can obviously turn up the Sansui volume knob to compensate. If my phone volume...
  9. macman007

    Audio dropping out intermittently - Marantz Integrated amps, Preamps from 1970-198x

    This will be the 3rd Marantz time I've had this problem on personal units. If you have something similar happening when playing your unit and it is driving you nuts you are not alone. It seems like a simple issue at first glance. You're thinking it stems from a dirty switch, push button or...
    • macman007
    • Thread
    • audio drop out dubbing jacks integrated intermitent low signal marantz no audio preamp receiver
    • Replies: 2
    • Forum: Marantz Audio
  10. ScooterMcTav

    NAD 7140 Preamp Section Not Working

    Hello All, There were actually two threads similar to this already on AK, but I do know we like to have folks start their own threads. And really, thread #1 was full of folks who are way smarter than me, while thread #2 was a guy who just cleaned his controls and got things working...
  11. G

    Macintosh MA 6200 Question

    Hey guys, I have a Macintosh MA 6200 integrated amp that I would like to try and use as a preamp for my Dynaco Mk. III monoblock amplifiers. My PAS II is on the fritz and so I have these monoblocks and would like to hook'em up to the Mac. The mac has a set of jumpers on the back labeled Preamp...
  12. abigavocado

    Budget preamp/receiver advice

    Hi folks! So I'm in the market for a preamp or a receiver for my turntable, and could use a bit of advice since I'm still relatively new to this whole turntable life. Currently I have a Kenwood KD-3070 turntable, a Sony receiver with no phono input and a pair of Sony bookshelf speakers. I'm...
    • abigavocado
    • Thread
    • phono input preamp receiver turntabe and speakers
    • Replies: 2
    • Forum: Turntables
  13. 1

    Need advice on a new setup

    Hi guys, first of all I'm new to the forum and not exactly sure where to post a thread like this. If this is the wrong place, please tell me where I should post instead. Now to my question: Yesterday, I bought a used Dual 1229. I don't have any HiFi equipment in my own room which means I need...
  14. Mykill

    Led Lights Not Working.

    Hi, Got an old Audio Dynamics C-200 surround preamplifier. The lights don't work but the preamp itself is still working. Could it be a fuse? Not one is lit. Any suggestions? Thanks Mykill
  15. S

    Preamp out to power amp question

    Hello, longtime lurker here. Hope I'm posting my receiver pre-out and power amp questions in the right place. I want to hear the sound of the power amp, and use a receiver as a volume control for incoming computer audio, and possible hook up two sets of speakers at once. the power amp has...
  16. R

    Preamp quer...

    Would the Optimus sa-155 work as a preamp?
  17. PoDuck

    Trouble with preamp on 2250.

    I recapped this 2250, and all was well except for the phono section. I didn't have a signal generator with low enough output to not overdrive it when I first went through it. I left it as it was, using everything else just fine for a couple months, then I got a proper signal generator that...
  18. PoDuck

    Trouble with preamp on 2250.

    I recapped this 2250, and all was well except for the phono section. I didn't have a signal generator with low enough output to not overdrive it when I first went through it. I left it as it was, using everything else just fine for a couple months, then I got a proper signal generator that...
  19. nickdinatale

    Preamp ideas for a pair of Fisher 100 monoblocks

    After dabbling with my pair of 100 monoblock projects for months, I think I'm just about done and ready to put them to use, but alas, I don't have a proper preamp. Originally I had intended to use my Fisher 500c as a preamp, but very quickly realized the jacks on the chassis that I had taken for...
  20. R

    Adding tube influence to a solid state Phono

    Hi so I want a tube preamp I have a great sounding Yamaha CR420 I use my turntable more than any other source. I think I have narrowed my selection to an Phono preamp (tube) ...or a preamp buffer (tube) that has knobs for EQ I want to know which is preferred and where to put it in the...
    • Ryan Case
    • Thread
    • phono pre amp pre amp help preamp tube tubes
    • Replies: 3
    • Forum: Tube Audio
  21. 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...
  22. Z

    Recommendations for a modern pre-amp/receiver

    Hi all, I'm ideally looking for a single quality unit that will accept phono inputs from a turntable and output 1) a high quality digital signal for input into a computer but also 2) output to a regular, non-powered pair of speakers. This may be an unusual request but having one unit that can...
  23. ericleehall

    re:The C52 features a 24-bit/192kHz, DSD (DAC)

    my new McIntosh C52 features: The C52 is also capable of decoding and playing back DSD files. The USB input accepts PCM signals up to 32-bit/384kHz and supports DSD64, DSD128 and DSD256 plus DXD 352.8kHz and DXD 384kHz. The C52 features a 24-bit/192kHz, DSD digital-to-analog-converter (DAC) So...
  24. destroyerzx1

    Best SS Preamp w/Phono Vintage or new $1k-4k?

    Alright so my current setup is Speakers: Yamaha FX-1 Amp: Yamaha B-2 Currently being serviced Turntable: Thorens TD126 MKII Phono pre: ART DJpreii - Temporary for the time being Preamp: XiangSheng 728A Spent way to much money tube rolling this thing I had taken my turntable over to my fathers...
  25. C

    Marantz 2230 with a Denon DL-103R Moving Coil cartridge

    *first time post* so today i purchased a Luxman PD277 Turntable that has a Denon DL-103R Cartridge with it. I got it all for $375 which seemed like a fair price for both. upon coming home to hook it up to my Marantz 2230 and Dynaco-a25's i was getting a really bad buzz when i had the 2230 in...
    • codyhale
    • Thread
    • denon luxman marantz moving coil moving magnet preamp
    • Replies: 13
    • Forum: Solid State
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