While i had these amps here and a few extra minutes, i thought it'd be fun to do a little blind taste test. So here are some clips of four two rocks, in alphabetical order: Custom 100, Custom Reverb Sig, Emerald Pro, Opal. They are not in this order in the clips, although each clip has the four amps in the same order. There is a 'click' in between each amp. Clean-1: http://www.soundclick.com/util/downloadSong.cfm?ID=2909543&key=3F0DCD74-F Clean-2: (deleted) Lead-1: (deleted) Lead-2: (deleted) Lead-3: http://www.soundclick.com/util/downloadSong.cfm?ID=2909805&key=3F0DCD74-F Lead-4: http://www.soundclick.com/util/downloadSong.cfm?ID=2909829&key=87355961-8 Anway, i have no agenda here. i just thought it would be interesting to hear people's comments on any differences they hear among the amps divorced from knowledge of the model (or to see if they can tell the model from the clip). And though this is far from the best recording of these amps, there aren't many comparative clips out there, so maybe this is better than nothing for those looking to buy a two-rock. Have fun!