so it is pretty much worthless correct? Having not seen any info on it I was leary about it, and at a price of $500 it is clearly a rip off from what I gather.
Just in case someone checks this thread in the future, the 500A is a Bob Bird design. Nelson Pass did work at ESS with Bird, but Pass was designing speakers at that time. Bird was a well-established engineer by then and designed the ESS amps.
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