I was at work tonight, checking out the new Pawn Shop series Greta amp from Fender. I've been away for a couple months, so I hadn't had time to sit down with it and really try it out. My buddy at work told me that he had been using one for a few months now as a tube pre-amp, just running it in line to his amp.Being ever curious, I took one out as a loaner to try on my rig at home. My rig is an Ampeg SVT 215 with an Ampeg PF500 head sitting on top. I set this thing on top of the head and began experimenting with different ways of using it. I tried using in the blendable effects loop, but it didn't want to work correct. I then tried it in the rack loop, but with the same results. Only once I connected it inline to the front of the amp, with the bass going into it first, did it really start to sing. It's like it scratched an itch tone-wise that I didn't know was there. It was nice, clear, punchy, and articulate, with just enough compression from the Greta's tubes to make it have that nice attack. If I wanted some grind, I could turn up the volume on the Greta to overdrive it, and dial in the tone to taste. It sounds fantastic. It basically did what I've been trying to find a pedal to do for a while now. I didn't see anyone else post about this cool little amp, so I thought I'd throw this out there. Has anyone else tried hooking up one of these guys as a preamp? I think I might have found a crown to sit on top of my head!