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Really fabulous really cheap (power or integrated) amps

Discussion in 'audio' started by mandryka, Feb 13, 2020 at 5:26 PM.

  1. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Musical Fidelity P140/150.
     
  2. stuwils

    stuwils pfm Member

    musical fidelity doc thomas, and it will heat your house as well so bargain.
    Rgds
    Stuart
     
    Alex S likes this.
  3. Alex S

    Alex S carbon based lifeform

    I like them so much I have two pairs. One in use in 2nd system the other in the attic for when/if any of my kids ever move out.
     
  4. Jono_13

    Jono_13 Duffer

    Nait 3, cheap and good fun.
     
  5. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Googled it and it is a Sonic Impact T Amp and uses a TA2024 IC. Spec is actually 6WPC @ 8R and 9WPC @ 4R.
     
  6. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Ah yes.. and the Studio T.
     
  7. Shadders

    Shadders pfm Member

    Hi,
    May be of interest :
    https://spectrum.ieee.org/tech-hist...ame-tripath-technology-ta2020-audio-amplifier

    Can purchase TA2020 from :
    http://store.sure-electronics.com/product/AA-AB32155

    Regards,
    Shadders.
     
  8. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Come to think of it there are quite a few "sleeper" MF amps around... P170, P270 and A370 even.

    The big problem is that being so old now and running so hot any you find WILL need a complete rebuild. If it's already been done they won't be cheap and particularly in the case of the 270 and 370 it will be expensive! 10 X 22,000uF caps PER CHANNEL in the A370! With a 1KVA toroid... per channel! If you can do the work yourself though then the two biggest MF mosfet amps (other than the rare SA470 and hens teeth 570) are worth looking at. Will give Krell etc a good run for its money;)

    The cheapest to most expensive are basically the same design with bigger power supplies and more output mosfets in parallel as you pay more. P140/150 quite "valvey" in some respects and about 70WPC. B200 is same power amp but with basically an A1 pre amp section to make it an integrated.

    There's an old thread I started in the classic area in which I go into some detail about old MF amps. https://pinkfishmedia.net/forum/threads/vintage-musical-fidelity-mosfet-amplifier-guide.228290/
     
  9. stevec67

    stevec67 pfm Member

    Is it hell cheap.
     
    Darren likes this.
  10. stevec67

    stevec67 pfm Member

    Cheap big traditional amps, which precludes all the chip amps, good as they are, might include Yamaha. Some big amps for not much. Fans of the JVC 1010 should check out its predecessor the AX3 (?) and similar. These are for vtenners.
     
    jtrade and Alex S like this.
  11. lordmortlock

    lordmortlock Mark Audio drivers and TP4 Cartridges

    Ion obelisk, audio analogue Puccini and Marantz pm4. All worthy entries ime
     
  12. mandryka

    mandryka pfm Member

    Very good to have these ideas. I can wait until good looking clean examples appear at a reasonable price.
     
  13. mandryka

    mandryka pfm Member

    These go for more than £2K!
     
  14. lordmortlock

    lordmortlock Mark Audio drivers and TP4 Cartridges

    The Anni might, but the original, SE and SE remote shouldn’t set you back more than £300.
     
  15. S-Man

    S-Man Kinkless Tetrode Admirer

    Another vote for Ion Obelisk.
     
  16. Alan Brown

    Alan Brown Registered LUser

    Inca Tech Claymore, usually under £300 on eBay. There's a very nice one on audiochews forum right now.
     
  17. Richard Lines

    Richard Lines pfm Member

    Give us a clue as to what you think cheap is then - there's one on eBay now for £350 BIN

    Regards

    Richard
     
  18. stevec67

    stevec67 pfm Member

    Sub £200 is cheap. Subject to age and condition of course. £350 for a 20 year old amp that was only twice that brand new and may need a service is hardly cheap.
     
  19. stevec67

    stevec67 pfm Member

    Nor should they, it was a £500 amp in the mid 90s.
     
  20. JemHayward

    JemHayward pfm Member

    I have two of the original T-amps from Sonic Impact - on is running off a wall wart running my Fostex 166 as centre in my TV system. The other lives in the loft, running off a Skynet SNP-8080 SMPSU which works really well, driving my bathroom speakers - totally reliable for years now. I have a couple of Muse T-Amps that are the equal of the Amptastic, but somewhat cheaper at the time. I built a useful power amp using Hypex uCD modules for very little money that would drive my ML Summits.

    The Leak Stereo 30 my dad had was truly awful - made me realise that amplifiers didn't all sound the same, I picked up a Leak Stereo 20 for £30 including power amp when I was at Uni in 1980 - we did the comparison - what on earth were Leak on at that time?

    Sugdens A21 and A48 were always good. I preferred the Pioneer SA-6500 I bought when I compared it to the A&R A60 and there still seem to be some about - seem to fetch about £160 now, but when mine went wrong in the early 80s the parts were unavailable so a risky purchase.

    Some of the 'unloved' Naims like the NAP90 tend to be quite reasonable.
     

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