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In Reply to: Re: Curious why the O.T.L. board moves so much slower than the S.E.T. board. posted by Rich Brkich on June 3, 2005 at 08:16:44:
And his affection for the mu-follower is not a secret either. I wonder whether the amps use NFB at the output and if so how it is implemented.
Follow Ups:
There is variable feedback at the output... [ knob on top of the amp - upper right corner of the picture shown in this post :-) ]. Feedback is local I believe.
Happy Listening,
Rich Brkich
Retailer & Audio Asylum Industry Liaison
And I suppose the power transformer(s) are toroidal; the flat disc shape would be hide-able inside that massive chassis, under the circuitry.
Yes, multiple transformers per monoblock... at least (big) one is torridial... plus there is the variac, then I think one other smaller transfromer (which I can't recall if its torridial or not) plus another little transformer for the digital meter power supply.Compared to what you find in most (tranformer output) tube amplifiers, the power supply design is a good deal more complex! :-)
Happy Listening,
Rich Brkich
Retailer & Audio Asylum Industry Liaison
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