The Pass class A amps are not pure class A. They are class A up to the rated power but then they go into AB for a lot more power. The XA-25 will put out a clean 75 watts easily. But except for super short peaks the amp will stay well below its class A power. So it's sort of 99% class A with AB emergency power.
Pass Labs XA-25 vs XA-30.8 amplifier
Has anyone listened to the Pass Labs XA-25 and XA-30.8 amplifiers? Can you share what you heard, as well as what the differences are besides rated power and cost? I’m thinking of using one of these amps with my Audiovector R1 Arrete speakers and REL T/9x subwoofer (source is Weiss 501 DAC/digital preamp).