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In Reply to: The main thing is HEAT. and waste of power.. posted by Smelly_Socks on October 11, 2016 at 20:27:09:
Not quite , they are 25% efficient and correct they can only be full biased into class-a at 8 ohm, well for SS amplfiers.As to multiple outputs , this is a necessity when dealing with SOA , Beta droop , et al. If only doing for 8 ohm load and low power, one could get away with one or 2 pr , Nelson does with his F series of amplfiers. 3Pr is my min for good sonics and SOA , but the amount of necessary class-a is usually determined by speaker load and sensitivity , this is critical , as our ear/ brain calculus will pick up the transition if too soon or too late.
Never heard a small Amp sound better than a big Amp , all things being equal , same for speakers ...
Class A toobs are different , one reason due to the output Transformers ...
Edits: 10/11/16
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Follow Ups
- RE: The main thing is HEAT. and waste of power.. Yes - A.Wayne 21:48:15 10/11/16 (0)