Dennis uses Pascal and Anaview core amplifiers. The Anaview amps are designated with -A. If I am not mistaken, Dennis modifies the input stages for the Pascals but not for the Anaview amplifiers. In any case, Dennis can confirm that for you one way or the other. I own 3 M3-600M-A (Anaview) amps for my LCR (Danley SM60Fs), a M3-2800-7 (Pascal) and M3-2000-5 (Pascal) for 12 surrounds (Reaction Audio CX-8 Be).