RE: Hmmm

RE: Hmmm

Posted by E-Stat (A) on August 15, 2016 at 19:15:14

In Reply to: RE: Hmmm posted by Michael Samra on August 15, 2016 at 18:08:57:

I'm not sure what AT is using for a preamp.

Check his profile for answer.

CJ. Preamps many times have way more supply than is needed..

We have different points of reference. The Classic 2 SE doesn't look particularly impressive to me. Standard trannie and two small caps and a silver mica(?) bypass?

Power supply capacitance is cheap to get that many companies over do their power supplies with filtering thinking it's a selling point..

Once again, my experience is that PS stiffness really counts. Adding up what appear to be five different rails of the Sherwood integrated, the total from the schematic appears to be just under 22 joules. The same as my SP20 preamp (940 uF @ 220V)

use more expensive film caps because of the quality of the cap and its efficiency as opposed to a lytic.

Makes perfect sense for audio coupling caps. Major manufacturers today, however, use electrolytics for primary PS storage and bypass them with WIMA, WonderCap, etc. films. And use R-core trannies.

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Follow Ups Full Thread

Topic - With modern sources putting out 2.5v why do I need a preamp - airtime 07:40:40 08/13/16 (20)

Yes - Awe-d-o-file 17:01:05 08/17/16 (0)

RE: With modern sources putting out 2.5v why do I need a preamp - Bold Eagle 14:09:23 08/17/16 (0)

Palutris explained it pretty well but you also have to consider - Michael Samra 16:51:04 08/14/16 (0)

If you use a high gain amp, you just need a volume pot. - richardl 12:49:03 08/14/16 (0)

RE: With modern sources putting out 2.5v why do I need a preamp - Palustris 12:12:33 08/14/16 (0)

RE: With modern sources putting out 2.5v why do I need a preamp - Crazy Dave 11:51:40 08/14/16 (0)

I remember that topic having come up ten years ago - E-Stat 11:08:15 08/14/16 (6)

Flavor - airtime 11:40:31 08/14/16 (5)

Hmmm - E-Stat 12:25:19 08/14/16 (4)

RE: Hmmm - Michael Samra 16:17:07 08/14/16 (3)

RE: Hmmm - E-Stat 18:21:45 08/14/16 (2)

RE: Hmmm - Michael Samra 18:08:57 08/15/16 (1)

RE: Hmmm - E-Stat 19:15:14 08/15/16 (0)

" throwing away signal level so that a subsequent gain stage can make it back up" - 1973shovel 19:11:22 08/13/16 (0)

RE: With modern sources putting out 2.5v why do I need a preamp - fredtr 15:54:00 08/13/16 (0)

RE: With modern sources putting out 2.5v why do I need a preamp - mark.korda@myfairpoint.net 15:44:37 08/13/16 (0)

RE: With modern sources putting out 2.5v why do I need a preamp - Iain42 13:48:24 08/13/16 (0)

Interesting on the CJ - spindoctor 13:27:32 08/13/16 (0)

impedance matching/buffering nt - viridian 10:47:50 08/13/16 (1)

and/or "drive" to the first stage of the power amp (nt) - mhardy6647 11:18:58 08/13/16 (0)

Follow Ups

RE: Hmmm - E-Stat 19:15:14 08/15/16 (0)

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