Wow that alot of amp! Can you say what are yours impressions on the sound quality this amp?
The B+ are 1200VDC?
Well, the first one (black) - Agate: deep but tight bass, much air and ethereal, while full with music and power. Actually, this is my favorite amplifier. Anode voltage is 450V.
For the second (white) - Equinox: exploding dynamics, uncompromising presence across the audible range, with very solid bass foundation, natural and vibrant vocals, subtle and unobtrusive high with excellent resolution. Anode voltage here is 650V.