I have just received my ASL Hurricane monos and they are an unbelievable combination with the Pipedreams speakers I am using. The ASL's replace a much more expensive amplifier.
Go look at http://www.high-endaudio.com/index_ac.html and look under the recommended amplifiers and you will see another view on these amps. Seems like even if Harry might have got a wee bit excited on this one, he has some justification.
Bias takes a little time as the 16 (8 per side) set screws are somewhat sensitive to slight movement to reach 485. Front meter makes it relatively easy to reach 485 RANGE. 10 minutes tops unless you are completely anal- then occasionally bias until unit breaks in and bias settles.
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