Class A Solid State Sound

Thanks for the information about Pass XA, Erik. I also believe the entire design and voicing are what leads to sonic differences. However, even today, I find mosfet based output stages to generally present a smoother, potentially less objectionable sound...just my opinion.

 I’ve heard diverse opinions on “pure” (non-bridged) class A monoblock amplifiers (Such as Antileon Evo Monoblocks and others) vs bridged class A Monoblocks (like Clayton M300 bridged internally by the designer or Luxman A600 in BTL mode (bridge tied load) 
Many feel the non bridged Monoblocks are better sounding, when output devices from the two channels are summed in Parallel vs Bridging the two channels.  Thoughts or technical explanations?

Mijostyn: I enjoyed your Under Seige II reference to assumptions.

As a close alternative to large class A SS amplifiers, the GamuT series of class AB amplifiers with 1 large industrial
size mosfet per phase (2 large NPN mosfets per channel) also provides a full organic sound.

Thanks to all respondents!

Hi George:
May I inquire what you might know of those large
industrial sized NPN mosfets used by GamuT, reported to generate extremely large amounts of current?
Nice sounding amplifiers......just curious.  Thanks!

I guess so much relates to implementation.
Both Accuphase and Luxman amplifiers enjoy excellent reputations. Accuphase employs Mosfets and toroidal transformers, while their Japanese competitor, Luxman, employs Bipolar transistors and EI transformers.  Interesting indeed!