Class A Solid State Sound


Would someone kindly describe the differences in class A sound of Pass XA.8 series, Accuphase A-70/75 series, and Gryphon class A amplifiers. Does much or any of the differences relate to mosfet (Pass and Accuphase) or bipolar (Gryphon)  output devices?  Thank you!

audiobrian
Good luck driving your low input impedance amps with your torpid passive amps.
You got and know nothing.
And no need to attack and put shit on my product Kosst, it has absolutely nothing to do with BJT vs Mosfet for current ability into low impedance loads. You really are a piece of work, take another swig.
Post removed 
Hi,

unless V-fet is used, Mosfet always sounded better to me compared to bi-polar.
If memory serves, BTL usually raises the total output impedance. Perhaps that's a contributing factor in liking it or not?


Otherwise, the discussion about current/power delivery in MOSFETs vs bi-polar transistors is silly. Parallel devices, driver stages and feedback are all able to create any amount of current and power with either device type.

Which brings me to another point: Feedback, and lack thereof, can have a profound effect on the amp sound and characteristics. Luxman amps rely heavily on global feedback in their Class A amps, and they are fabulous. Some other Class A makers use local or no feedback at all. I suspect that speaker matching, and what sound you like lies largely here.