Vintage Asylum

I almost won this Fisher SA-1000.

97.95.43.235

Michael Samra

If the last didn't bid,I would have. It's no doubt a blessing that I lost but it would have been nice to have one of these.

"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

http://www.ebay.com/itm/the-fisher-sa-1000-amp-/152188362048 (Open in New Window)

Edits: 08/07/16

Follow Ups:

How does the SA1000 compare to- - Ross 15:07:21 08/08/16 (4)
The Cit II and MC275 ?

I've always wondered about the SA1000. And the Fisher 200....a 6550 monoblock.

Thanks,

Ross
- RE: How does the SA1000 compare to- - Michael Samra 21:04:02 08/09/16 (3)
  I would imagine quite favorably..The SA1000 ca be McShaned as well if you look at the power supply and I think another choke and and some tighter regulation on the G2 supply and this amp will run with the best of them.I am guessing because the Citation 2 and the Mc275 set the bar pretty high.
  
  "For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
  - Do the McShane PS changes - Ross 08:30:14 08/10/16 (2)
    affect sound quality to the extent that different amps sound more like each other than before the changes ?
    
    Thanks,
    
    Ross
    - RE: Do the McShane PS changes - Michael Samra 19:05:32 08/10/16 (1)
      Ross
      The McShane changes bring out the potential design of each amp because you now have a power supply with a lower impedance and a lot of more joules of energy.This allows the famous circuits in the MACs,Citations,and Fishers to be able to operate at their full potential as dictated by the original design.Back in the day,it wasn't as big of an issue because you didn't have to worry about digital noise everywhere and the listening material of the day wasn't quite as dynamic or have the signal to noise ratios we have today.There was higher dynamic material but they didn't have the overall dynamic range of CDs and LPs that we have today.
      
      "For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
      - RE: Do the McShane PS changes - horn kid 13:03:35 08/20/16 (0)
        
        In Reply to: RE: Do the McShane PS changes posted by Michael Samra on August 10, 2016 at 19:05:32
        
        I hated that tube in the Quicksilver monos way back. Glassy, brittle, unreliable.
RE: I almost won this Fisher SA-1000. - Alpha Al 20:33:31 08/07/16 (4)
Cool amp. I've never seen one.

As you probably know, 8417 tubes are unobtainium. I'm sure it could be biased to run on EL-34 or 6550 though.
- "Unobtainium..." Somehow I don't think that applies... - musetap 21:40:23 08/07/16 (1)
  To Mr. Samra.
  
  Methinks he remains comfortably ahead of the curve.
  
  "Once this was all Black Plasma and Imagination" -Michael McClure
  - RE: "Unobtainium..." Somehow I don't think that applies... - Michael Samra 22:17:15 08/07/16 (0)
    Sorry Mike
    I have NO 8417s believe or not..Since I didn't win the amp,my net worth of 8417s will still remain the same...ZERO.
    
    "For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
- RE: I almost won this Fisher SA-1000. - Steve O 21:17:11 08/07/16 (1)
  "I'm sure it could be biased to run on EL-34 or 6550 though." Biased , possibly. Driven, probably not w/o major pre-driver/driver redesign. And then you wouldn't have the SA1000 any longer.
  
  The 8417 was the last of the consumer grade 100W power tubes released. It combined the power capabilities of the 6550 with the extraordinarily easy drive requirements of the 7591. Actually, in all important respects, the 8417 is equal to two 7591s in parallel but with somewhat greater voltage capabilities. IIRC, Fisher advertised that the 8417 was originally created for this specific amp but a few other mfgrs used it too. Both GE and Sylvania mfgd them but the Sylvanias were best by far. GEs had a tendency to run away at the slightest provocation. Guess which version is unobtainium.
  - RE: I almost won this Fisher SA-1000. - Michael Samra 22:15:33 08/07/16 (0)
    Steve
    You can run a 6550 or an EL34 as they are relatively close in plate resistance and plate to plate loading at the same B+..The only issue you may have is,you would probably have to mod the voltage amp or driver to make sure you are swinging enough clean driver signal,being the 6550 takes 3 times as much drive as a the 8417.The EL34 also takes considerably more to drive it but looking at the driver circuit,it is probably just a matter changing the plate load or cathode resistors,or maybe the grid leak resistors on the output tubes..I'm going to look at a schematic in a bit.
    
    "For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
RE: I almost won this Fisher SA-1000. - rockdoc 12:14:36 08/07/16 (6)
Michael have you ever heard or worked on one? I've often wondered how it compared with the cit II.
Steve T

Edits: 08/07/16
- It's fast and nutral but musical... - kuma 16:27:17 08/07/16 (0)
  the vest push pull amp I have heard. ( with all original tubes ) The amp is in a mint condition even with the original tag attached.
- RE: I almost won this Fisher SA-1000. - Michael Samra 12:31:28 08/07/16 (4)
  I have heard or worked on one.The 8417 is a very easy tube to drive but they are mot made anymore.I'm sure the amp is very good due to the incredible Freed iron.
  
  "For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
  - RE: I almost won this Fisher SA-1000. - BillH 16:46:27 08/07/16 (1)
    Whew! Close. Like wandering into a high-stakes poker game you can't afford.
    But a really clean Fisher amp, that one.
    - RE: I almost won this Fisher SA-1000. - Michael Samra 22:48:30 08/07/16 (0)
      I like that amp I can't lie.
      
      "For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
  - RE: I almost won this Fisher SA-1000. - spindoctor 16:39:25 08/07/16 (1)
    But Michael $2500???? That's a lot of money!!!
    Sim
    - True but I only bid 2130.00 and if the guy above didn't bid, - Michael Samra 22:19:59 08/07/16 (0)
      I would have gotten it for 1780.00.If I did want to win it,I probably would have had to spend 2500 at least.
      
      "For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

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