This afternoon I dusted off my $29 ART "Tube MP" preamp and decided to compare it to my $300 Golden Age Project "Pre-73". Obviously these are in completely different ballparks price-wise, and the Pre-73 should wipe the floor with the ART.
I don't have a mic handy, so I tested with a Les Paul and my own P bass clone.
I play a lick through the first preamp, then play it again through the second. In each clip, the preamps are in the same order. I won't say which is which yet.
Here are the links:
http://www.atkinsonbasses.com/audio/basstest.wav
http://www.atkinsonbasses.com/audio/guitartest.wav
Which do you prefer? Cast your vote above.