I think where the misconception comes in is that they have a similar look and power to weight ratio as the I-Techs. With the removal of the heavy Iron core transformer and the use of modern surface mount components the weight of the amplifier has gone down drastically in similar proportion to the Class I amplifiers. However they are AB+B.
Thanks! Pretty clean sound for switching mode power supplies! Are these sensitive to voltage sag (say playing an outdoor gig and the AC is too low)?
I remember some old Carver magnetic field amps really had problems with low power.
The XTi/CDI/DSi amps have two voltage ranges. When plugged in the amp will sense if the AC supply is within the 120v or 240v range and lock onto the appropriate range. They have a +/-10% tolerance on the AC. So for 120v AC if the AC were to drop down to around 108v the amp would start acting weird and shut off. For 240v that would be around 216v.
But then again any amp would start going weird if you lowered the voltage 10%.
excellent - great amp