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Pass Labs Vfet amps

I heard the priceless Pass Labs Vfet Amps in the Sony suite at the NY Audio Show this weekend. Sounded wonderful!! There were only six Amps made worldwide of which Sony owns 4 and Pass kept 2. Nelson Pass purchased the remaining world wide supply of Sony Vfets and used them to build the 40th anniversary Sony reference Vfet amplifiers. Anyone else hear them or understand why they're so special?? Sony flagship speakers sound good but still can't wrap my head around Sony as a "high end" audiophile quality product... Would have loved to hear Vfets on Wilson XLFs, Focal Grand Utopia or YG Acoustic speakers but that will never happen unfortunately. If Pass XS series Amps cost $85k a pair what would it take to get Sony to part with a pair of their Vfet mono blocks?? If only I had an extra $million dollars to play with... Probably worth it!
lepps200228

Showing 1 response by techtube

techtube
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I own a V-fet amp the Sony TA-N7B, and can only suscribe the sound of it as of a proper triode tube amplifier. Have tweaked around with (diy) hybrids amps (tube voltage and Mosfet output devices) 1969 John Linsley Hood 10W pseudocomplentary BJT amp, SE pentode, germanium complementary amps and am atm building a JLH like configuration with tubes (SEPP with EL34's and a autotransformer)
Unfortunately the TA-N7 is not that stable indeed even after swapping all mediocre parts (diodes, leaking caps, old low power BJT's in end cascode) Left channel can take max 50 watts before the driver stage dies, indeed parasitics could be a problem here.
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