Icepower is class D - has high power, high DF and is not astronomically expensive (to answer your question).
I stated previously what ideal DF should be and I feel I should explain it more. In ideal world high DF would be great - but in real life it is often achived by strong global negative feedbacks resulting in tons of TIM and unpleasant bright hi-fiish sound. Recently many companies design amps with shallow feedback or no feedback at all. Yes DF is low but they sound great.
About power: Quality of sound is inversly proportional to amp's power (revolutionary statement!). 100W amp sounds better than 200W amp - let me explain: For the same amount of money you can find better sounding 100W amp than 200W amp. There is a lot of estate needed to make 2x more power but you can barely hear the difference when power is doubled.
In addition to all this - different amplifiers (and technologies) sound so much different - don't go by the spects. Icepower has good spects but specific sound - I like it (and have it) you might hate it.
I stated previously what ideal DF should be and I feel I should explain it more. In ideal world high DF would be great - but in real life it is often achived by strong global negative feedbacks resulting in tons of TIM and unpleasant bright hi-fiish sound. Recently many companies design amps with shallow feedback or no feedback at all. Yes DF is low but they sound great.
About power: Quality of sound is inversly proportional to amp's power (revolutionary statement!). 100W amp sounds better than 200W amp - let me explain: For the same amount of money you can find better sounding 100W amp than 200W amp. There is a lot of estate needed to make 2x more power but you can barely hear the difference when power is doubled.
In addition to all this - different amplifiers (and technologies) sound so much different - don't go by the spects. Icepower has good spects but specific sound - I like it (and have it) you might hate it.