I have a Marshall 20/20 power amp that I use to run the wet part of a W/D/W rig and when I turned my hotplate all the way down and was just working with the signal from my SF bassman it sounded really good :RoCkIn . This has got the wheels to spinnin . If I could find a preamp that can deliver the goods as well I might not have to carry as much stuff around to get the tones that I want. I have a Line 6 XT Live but it just doesn't cut it. I use it for practicing by myself and it sounds fine but when I swap over to a real tube amp the difference is drastic and obvious. Even if I run it in front of the 20/20 it still is lacking for my tastes. I would love to hear some experienced users thoughts on the JMP-1 or similiar. Also the Bogner Fish, CAE 3, any alternatives I have missed, and how they stack up to just running a standard guitar amp set up, tonewise. I never got into the rack phase so I don't know if you can cover the staples (BF and tweed Fender, Plexi and Modded type Marshall, Vox and Jazzy cleans) convincingly or not. I guess it is just GAS again .