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The most complex amplifier that you ever see
The most complex amplifier that you ever see
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Old 7th November 2017, 02:35 AM   #11
leadbelly is offline leadbelly  Canada
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The most complex amplifier that you ever see
You guys need some tube fun in SS forum.

1000W? Champ 1000 Watt Tube Amp

30 tubes? EAR V20 integrated amplifier | Stereophile.com

OTL? 19 tubes/monoblock Transcendent Sound BEAST OTL Tube Amp
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Old 7th November 2017, 02:38 AM   #12
Tajzmaj is offline Tajzmaj  Slovenia
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BSS EPC780 might be good candidate.
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Old 7th November 2017, 05:07 AM   #13
mchambin is offline mchambin  France
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ROFL. Thanks for this fun thread.
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Old 7th November 2017, 05:44 AM   #14
BesPav is offline BesPav  Russian Federation
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Good candidate:
My Bridge Amp
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Old 7th November 2017, 06:11 AM   #15
mirlo is offline mirlo  United States
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Cool What is it?

Quote:
Originally Posted by Mark Johnson View Post
Probably this amplifier. Click on the white "X" at lower left, to see it at full 100% magnification.

_
I think I recognize the drawing style (kind wanna say "schematic font") from old National Semiconductor or maybe TI datasheets, but no idea which amplifier that is. In fact now that I think of it, datasheet schematics from many mfrs. have something close to that "font".

Also, I think there's more to it. Another page?
Where does the net Bias Buss go?

Other than that is has standard op amp pinout ...so it doesn't seem like a multiple amp package. So why separate out the bias circuit?

Now I am very curious to know what it is.

More BJTs than an 8008. It might have fewer BJTs than a modern CMOS microprocessor though.
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Old 7th November 2017, 06:46 AM   #16
xrk971 is offline xrk971  United States
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The most complex amplifier that you ever see
GainWire mk3 CFA pre/phone amp with very low distortion

It is so complex that I can't get myself to finish building it.

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Old 7th November 2017, 07:11 AM   #17
mt490 is offline mt490
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I don't consider the paralleled or repeated features in some power amplifiers to be complexity. Also in the case of repeated stages that perform selectable modality, I would also not say that they have the same weighting when it comes to complexity.

For parallel and duplicated features say about 1/10th to 1/3rd weighting, and for modality beyond two options, about half weighting, depending on implementation.
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Old 7th November 2017, 09:27 AM   #18
de Ocampo is offline de Ocampo  Philippines
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How about this one..
FP 10000Q - Lab.gruppen
Haven't seen one physically though.
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Old 8th November 2017, 12:56 AM   #19
Havenwood is offline Havenwood  Argentina
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Maybe not the most complex amplifier but yes the most expensive !
Halcro DM-38, Mono amplifier U$D 25K each!

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Old 8th November 2017, 01:39 AM   #20
Diogenes is offline Diogenes  United States
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Quote:
Originally Posted by Havenwood View Post
Maybe not the most complex amplifier but yes the most expensive !
Halcro DM-38, Mono amplifier U$D 25K each!
Had a chance to spend a few hours listening to a pair of DM-88s on different over a few different trips to a dealer years back. They had by far the best sound signature I've heard of any amplifier: none at all. Clean, clean amps. Ugly, but I'd love a pair.

As for the most expensive...not quite. Those Halcros are downright budget level in the hi-end game these days. I believe that standing for most expensive is held by the Pivetta Opera Only at $2.2 million USD. That amp may even be a challenger for most complex in terms of parts count, but only if it's ever actually assembled. So far only a half-built mock-up has been displayed at shows with no torroids and other heavy parts installed. Not that I can blame him for that; the full spec'd 800kg would be a tad difficult to truck around.
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