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tube

  1. F

    Thinking about buying this Dynaco ST70, is it worth it for a beginner?

    Hey guys, I've never been on this forum before but I was refered here and thought you might have some good info. I can get my hands on a ST70 for around $350, but only until tomorrow. I've been really interested in getting into speaker set ups and especially tube amps as a fledgling headphone...
    • Fredark
    • Thread
    • beginner buying diy dynaco dynaco st70 fix st70 tube tube amp used
    • Replies: 4
    • Forum: Dollars and Sense
  2. jprossi

    Trouble with ARC SP-6

    Hi all, I have a late 70s Audio Research SP-6c preamp that I acquired in non-working condition from a family member several months ago. I took it in to my local tech, and $300 later I had it home and was loving it. Now I'm having issues again. When I power the unit on, I get a high pitched...
    • jprossi
    • Thread
    • arc audio research not working preamp repair screech sp-6 sp-6c tube whine
    • Replies: 12
    • Forum: Tube Audio
  3. The fojizzle

    Help please

    so a friend of mine gifted me this cabinet. All components work. I am gonna have a tech replace the plug (it’s frayed) and go through it all and refurb. The cabinet doesn’t work in my house. I was thinking of taking all the stereo stuff out of it and building a smaller cabinet. I would keep all...
  4. The fojizzle

    Technics sl-q2 setup question

    So I JUST bought a Technics sl-q2 turntable that was refurbished. Paid $120 for it. Got to listen to it. Sounded GREAT. This is my first turntable. I really want the sound of vintage tube but with today's new tech combined. I found this and it came recommended. Now I'm finding I still need a pre...
    • The fojizzle
    • Thread
    • help new guy pre amp sl-q2 technics tube tube amp
    • Replies: 0
    • Forum: Tube Audio
  5. RibbonAddict

    Complications of using 2c22/7193's on ST-70 Driver Board?

    Hey all, it's finally time to replace the 7199's on my ST-70, so I've been taking a look at just upgrading the entire driver board entirely. The 12AU7 and 6SN7 boards seem to be the common swaps, but I've been curious as to whether it would be more effective to simply create a board with two...
  6. M

    want to know what this is

    I have this tube amp? but there is no power switch and I just want to know what exactly it is so I can see if Id have a use for it. To me it looks like an amp with right and left inputs in front and speaker inputs in the back. But im new to tube amps/tube anything. Just want more...
  7. mkelly99

    Turn the Humble Pi into an Audiophile Quality Tube DAC/Amp

    Pi 2 Design has announced a follow up to the innovative 503HTA tube hat. The 502HTA (ok, not the most exciting name) is a full size shield that offers the same single tube grounded triode with Class-A Fet buffer. But they have reworked the design for much lower noise while the new layout makes...
    • mkelly99
    • Thread
    • amp computer dac dac/amp raspberry pi tube
    • Replies: 1
    • Forum: DIY
  8. vaathi

    What is good price on Fisher SA300

    I have line on Fisher SA300 in decent condition with missing rectifier tube and Sovtek tubes for EL34. Seller is asking close to 800 and I see one which is restored but in bad cosmetic condition in auction site for less than that.. Thanks in advance for your help and suggestions.
    • vaathi
    • Thread
    • fisher fisher 300 fisher sa 300 fisher sa300 tube vintage
    • Replies: 6
    • Forum: Dollars and Sense
  9. artsybob

    Realistic SAF-40D Integrated Amp Score

    I just scored a Realistic SAF-40D integrated tube amp for a pretty good price (by eBay standards). It's a Japanese-built unit (possibly made by Kenwood or Pioneer) utilizing four 7189's, four 12AX7's and a 5AR4 rectifier. From the auction description it powers on but desperately needs a...
    • artsybob
    • Thread
    • 1966 1967 7189 integrated amp radio shack realistic saf-40d tube
    • Replies: 34
    • Forum: Tube Audio
  10. L

    Fleetwood Radio/Photo tube amplifier

    Hello ! Yesterday, I picked up an old tube radio/photo and it seems it's not working. The tubes are not glowing. Since these tubes are the original, I think I can try to replace them. Someone told me it could be the power transformer (model 596 written on the transfo, see pictures). Also, on...
  11. michaelw4248

    McIntosh in the Blood

    A pleasure - I've been browsing around here for sometime, always hovering and never engaging. I figured I'd change that today! I'm posting in the McIntosh forum because that certainly seemed most appropriate. I was baptized into McIntosh-ism through my late father (six years gone). My father...
  12. grantray

    A not-so-original V1 McIntosh C20 preamp and the quest for a baseline of "factory spec"

    Well, I got it Friday and spent the weekend cleaning out 50 years or so of crud with isopropyl rubbing alcohol, cotton balls, q-tips and electronics cleaner. Here are two samples of before the scrub down, complete with crusted cables from decades of buildup... And here's what the inside...
  13. lattiboy

    Looking for cheap tube preamp with tone controls

    Hi all, I currently have a SMSL SA-98 amp. It's got more power than I could ever want, but no tone controls. Is there a cheap (probably Chinese) tube preamp with tone controls that anyone can recommend? The only one I can find is this model, but it only has limited reviews. I currently use...
  14. PaulFerrell

    Looking for help on a tube project

    Hello everyone, I just purchased a 1950's console that when new had a phonograph, Tape player, and AM/FM radio. The cabinet is in perfect condition for the age and is cleaning up nicely. The phonograph and tape player have been removed. I'm not real upset about that. The radio on the other had...
  15. phillyjoel

    Marantz 7 - All Original?

    I recently got this Marantz 7 at a thrift store and would like to know more about it. Had it tested out and is fully functional and sounds great but the guy couldn't tell me much more about the insides. Are all of the parts original? I can take more photos if needed. Thank you :]
  16. K

    Motorola custom

    I got a hold of this pic,id love an amp like this
  17. R

    Counterpoint SA4

    Does anyone know what a pair of these should be worth? I know they are OTLs which is a bit of a mixed bag in terms of performance for reliability. They were also stupid expensive when they were released so I am curious.
  18. jprossi

    Help with ARC Preamp

    Hi all, I've enjoyed reading posts on AK for a while now, but this is my first post. I've recently acquired some new gear: an Adcom GFA-555 and an Audio Research SP-6c. When I got everything hooked up and switched on the SP-6, nothing happened. The green LEDs for "pre-amp on" and...
    • jprossi
    • Thread
    • audio research preamp preamplifier tube
    • Replies: 9
    • Forum: Tube Audio
  19. nextstep

    Supersonic portable tube/valve radio

    Hi - I've purchased this SuperSonic radio recently, but haven't managed to identify it. It was built by Chassay Bros, Bulawayo, Zimbabwe (previously Rhodesia) for SuperSonic in South Africa.. Any help would be appreciated!
  20. bimasta

    CARY 2A3 CATASTROPHE

    I messed up my Cary 2A3 amp. Hoping for some help. It’s not the Cary 2A3 SET — it’s stereo, push-pull, 15WRMS — and it’s not the later Cary 2A3 Integrated. It’s the first amp Cary made, and it put them on the map: it got the small unknown company nationwide distribution. This is the one: I’d...
    • bimasta
    • Thread
    • 2a3 cary triode tube valve
    • Replies: 31
    • Forum: Tube Audio
  21. R

    I found an Aesthetix Calypso for under $600. What's a reasonable price for this line stage?

    I am in the market for a new line stage and I found an Aesthetix Calypso for sale, currently under $600 on eBay. The auction ends on Sunday the 12th. I'm curious what is considered to be a good price for this preamp? I'm hoping to get it for under $2,000 - is that realistic? Here is the...
  22. Wertz

    Pioneer SX-2000 for sale at local shop, whats a fair offer?

    I found a fairly rare Pioneer SX-2000 for sale at a local repair shop. It is clean but untested and as-is. They are willing to test all the tubes. Front faceplate and knobs have several light hairline scratches. AM antenna is cracked in the back. I have seen similar SX-800's sell for around $400...
  23. TellMeWhy

    Chinese Marantz 7 preamp clones any good?

    Does anyone have experience or opinions on the Marantz 7 clones available cheaply on the net, kit or otherwise? Is there such a thing as a great, newly built, tube preamp, with or without phono stage on board?
  24. Fonzombie

    JBL 4429 - driven by Primaluna Dialogue Premium HP Poweramp?

    Hello - I just recently purchased a pair of the JBL 4429's (currently on backorder). They seem to be very sensitive speakers and relatively easy to drive. Does anyone have an opinion on whether the "Primaluna Dialogue Premium HP Poweramp" will deliver significant enough power? My opinion is...
    • Fonzombie
    • Thread
    • 4429 dialogue jbl pairing power premium primaluna speaker tube watts
    • Replies: 4
    • Forum: Speakers
  25. L

    HK Tube console (Sunnyside, NY)

    HK a50k in this console, rebranded occasionally as churchill (which it is here.) Also a pilot fm tuner. Seller seems motivated to get it out, could be a fun repair / flip for the right person. No aff...
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