By your own criteria, nearly every single amplifier built is considered world class. $500 or $600 sounds very reasonable for selling a ton of them though.
Do you have proof that Pass understood the advantages and disadvantages of global negative feedback considering his later designs used zero global negative feedback? Remember that adcom amp was approx. 30 years ago.
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Interesting that I am the one who actually brought out the maximum possible damping factor of 1.33 or so (Using voice coil dc resistance as 3/4 of the driver impedance for ease in calculating. 6 dc ohm for 8 ohm, and 3 dc ohm for 4 ohm). This is the amp to driver direct connection. Less damping factor when the dc resistance of the choke winding is added.
One can use both mechanical and variable electrical damping when designing their speaker.
Maybe you should be grilling Ken Kantor since he actually proclaimed 10-20 damping factor (the typical way of calculating df) is appropriate with little improvement beyond. :yes:
Cheers
Pos
As far as I'm concerned, solid state amplifier design was at its zenith by the mid 1980s.
Esoteric amplifier designs are great for keeping people on the treadmill of buying new gear every few years or even more frequently, and/or for audio snobs to justify their purchases.
As for myself, I'll stay with tried and proven amplifier topology.
BTW, I wouldn't grill Ken about anything. He is well known, and well respected in his field. His opinions on amp and speaker design carry a lot more weight with me than those of any audio snob who trying to convince me that the latest and greatest oddball design is the cat's meow and everything else is just tinny sounding junk. Sorry about the run on sentence.
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