Anyone actually verify the spec of the Benchmark? I was thinking about how low the THD they spec, 0.0003%@20KHz for 4ohm at 27Vrms, That's like close to 200W. I researched into opamps that are used in preamps by Analog Devices, Texas Instrument and others, They are about 0.0008% give and take. These are small signal IC only, they are a lot ( I mean a lot) easier to design by the nature of their application. They only spec to drive 600ohm only, they only swing about 15Vrms. It's a different world compare to power amp at Benchmark specified. If the industry BEST cannot achieve 0.0003% even at such relaxed driving requirement, that make me wonder whether anyone actually verify their claims.
Too bad there's no way to verify unless you actually buy one and put it under test. I don't even know my equipment can even test down to 0.0003%. It would be nice to have a 3rd party independently test and verify the spec. I am still searching for their patent on the Feed Forward cancellation design. I tried THX Achromatic Audio Amplifier and have no luck. If anyone know the name of their patent, please let me know. I have no luck with "THX AAA technology" either.
Own designed power amp, own designed preamp, JM LAB Spectral 913.1 speakers, Rythmik F12SE sub.
Not hooked up: Nakamichi Stasis PA-7 power amp, Velodyne VA1210 sub, Kef Reference Series center, Kef Bookshelf speaker, Monitor Audio bookshelf speaker, Infinity rear speakers. Acurus 3X200W amp.