Tweekerman,
Certain tube amps deliver much more dynamics, or "slam" and "reserve power" as you call it, than the amplifiers you mention. Kirk930 mentioned one brand, Tube Research. They cost WAY more than the pathos that you mention, but I will suggest an audition, should your budget allow.
You also mention a "unique" power supply. How does twenty some tubes of tube regulation, per channel, in it's own/separate 210 pound chassis sound? Unique?
Certain tube amps deliver much more dynamics, or "slam" and "reserve power" as you call it, than the amplifiers you mention. Kirk930 mentioned one brand, Tube Research. They cost WAY more than the pathos that you mention, but I will suggest an audition, should your budget allow.
You also mention a "unique" power supply. How does twenty some tubes of tube regulation, per channel, in it's own/separate 210 pound chassis sound? Unique?