I have always been skeptical of anything that is touted as "revolutionary."
Most improvements in electronics are evolutionary rather than revolutionary.
Anyways, I have heard a stereo bookshelf system that uses digital amps (can't remember the manufacturer, it must have been either a Panasonic or Onkyo). And it sounded surprisingly good for such a small system.
But then again, I am highly skeptical of a 6 watt amp driving full range speakers. Of course you will get sound from that 6 watt amp. But what kind of sound?
The move to class D digital amps is entirely based on reductions in manufacturing costs. Class D digital amps are much less expensive to manufacture compared to traditional class A/B amps. That's the primary drive behind these "digital" amps. Sony not long ago made the decision to go with digital amps in all their ES receivers. But for yet as unannounced reasons abadoned that approach about a year or two ago.
If there is so much cost savings, and if the purported sound quality is that good, then there must be a reason why mass market manufacturers have not yet adopted digital amps in their into their consumer level receivers.
So far, Panasonic is the only mass market manufacturer that have incorporated digital amps into most of their receivers.
So does this mean that Sony, Yamaha, Pioneer, Onkyo, etc., know some deficiencies about these digital amps that we consumers do not?
P.S. I've always been partial to conspiracy theories. So take my opinions for what they are worth.
