BL> As I said once before, I like the linear amp approach for low
 BL> power.

 RM> Its disadvantages (size, heat, efficiency esp. on batteries)
 RM> usually outweigh the sensual beauty of the sine curve...

  I'm not an exact expert on 50 Hz sinewave converters, but at low
powers (25W) the efficiency of a switchmode power supply is battling
to reach 60%, and you can get 50% out of a Class B sinewave amplifier.

Regards,
Bob
 
___ Blue Wave/QWK v2.12
@EOT:

---