On 22 Jul 2003 12:07:09 GMT, ohawker (Andy
Evans) wrote:

Read the whole article at http://www.aloha-audio.com/library/FindingCG.html

excerpt - "try and find a transistor circuit that can deliver 50V rms at less
than 1% distortion with no feedback!"

Try and find any valve circuit that can do this - into a speaker
load......

*All* amps use feedback, but some don't use *global* feedback, leading
to a common claim about 'zero feedback' valve amps.

BTW, the answer to your question is any Krell FPB series amp from the
FPB300 up. They don't use global feedback. Also, there are damn few
valve amps capable of delivering 300 watts to an 8 ohm load, which
requires 49 volts rms. There are however many such SS amps - and they
can maintain their output voltage much better into real-world speaker
loads which dip to 3 ohms or less.
--

Stewart Pinkerton | Music is Art - Audio is Engineering