I know this is an old article, and may have already been discussed nigh to death, but my searches couldn't find it, so here goes. This is fascinating. I would urge you to listen to all the samples before finding out which pre is which. Take the time to listen to the whole thing. And note to file, that as they changed mics, they changed preamp order(A-H), so you can't go by what you heard with the previous microphone. Double blind taste tests are very revealing about our perceptions, vs reality. http://www.soundonsound.com/sos/oct12/articles/preamps.htm It would be interesting to hear these same preamps on a source like drums, guitar, voice. ...and so it goes.