All depends on the circuit, not all caps are critical, it all depends on how one uses it. I only have one film cap in each channel, at the input to cut off low frequency below 10Hz or so. It is critical to have film caps, other than that, I use ceramic NPO caps for compensation and all. I got incredible THD result in measurement. And sound wise, in my opinion ( just my opinion, might even be partial), my amp beats the Nakamichi PA-7 Stasis amp designed by Nelson Pass and is almost identical to his famous Threshold S300 and even slightly better.
Like I said before, I did not know thick film resistor has 1/f noise, I use as many thick film SMD resistor as I could, I have not noise problem what so ever. In fact my amp is so much quieter than the Nakamichi and Acurus I have. I can't hear anything even when I pressed my ears to the speakers.
Like I said before, I did not know thick film resistor has 1/f noise, I use as many thick film SMD resistor as I could, I have not noise problem what so ever. In fact my amp is so much quieter than the Nakamichi and Acurus I have. I can't hear anything even when I pressed my ears to the speakers.