The input impedance on my modded IceEdge amp that I was playing with was 47K after the first mod. I then raised that resistor to 148K and it sounded noticeably better. This was driven by a 50 ohm source that is biased with 10 ma of current on its discrete output stage (using a low capacitance 2 foot balanced cable). So, if a 50 ohm source sounds better with 148K.....why would you want less? There was no difference of noise idling or otherwise with the 148K.......dead silent.
You have to do listening tests to know anything. This is not theory......this is reality......your ears know what is real.
Nuprime is using 1meg input impedance in their latest 2 top of the line class D amps. They say it sounds better.
You have to do listening tests to know anything. This is not theory......this is reality......your ears know what is real.
Nuprime is using 1meg input impedance in their latest 2 top of the line class D amps. They say it sounds better.