One point--the Atma-Sphere OTL amps use only one pair of (normal-value) coupling caps...

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OTL, Output Transformerless Amplifier User Group.

In Reply to: No comparison posted by Rushton on July 25, 2006 at 15:42:54:

...and NO coupling transformersin the entire amp. The Futterman types use at least that many PLUS a huge (electrolytic) output-coupling cap.
The NYAL OTLs curently available may well be reliable, fine-sounding amps, but as Rushton wrote, they're a ways from the quality of the current A-S designs.

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Follow Ups Full Thread

Topic - Question regarding Futterman vs Atma-Sphere - SamWalters 15:12:29 07/25/06 (4)

Most of your assumptions are incorrect - Lew 07:32:52 07/26/06 (0)

No comparison - Rushton 15:42:54 07/25/06 (2)

One point--the Atma-Sphere OTL amps use only one pair of (normal-value) coupling caps... - jeffreybehr 16:40:43 07/25/06 (1)

Interstage coupling in a circlotron - anyone tried it? Ralph? - klaus 01:14:20 08/01/06 (0)

Follow Ups

One point--the Atma-Sphere OTL amps use only one pair of (normal-value) coupling caps... - jeffreybehr 16:40:43 07/25/06 (1)

Interstage coupling in a circlotron - anyone tried it? Ralph? - klaus 01:14:20 08/01/06 (0)

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