Going back to the original idea of just putting a big cap across the LED.... Assuming there is a dropping resistor from DC power supply somewhere in the amp (even if its the heater or high tension supply !), a largish electrolytic capacitor should do the trick. It only needs to be a low voltage...

I have an "E-MU Tracker Pre" which is an external USB sound DAC / ADC that does up to 24 bit / 192 KHz. As well as line & mike level in/out sockets it also has a very clean headphone output (1/4" socket) and volume control. The "E-MU 0202" is almost identical but a bit cheaper, much less than...

SNR is a 'ratio' so it needs to be quoted with respect to some level of signal output, eg. 85 dB at 0.1Wrms output. The specs are pretty generic values that fit within the minimum accepted criteria for 'good' sound. I wouldn't really expect anything better from a standard laptop PC...

Quote: Originally Posted by jonathanjong ^ Erm, I guess I'm looking for rock music, but with non-traditional (to rock) instruments. Violin, trumpets, etc. Big bang rock? Or perhaps the other way around: Classical-ish music played by a rock band. How about 70's band "Electric...