After picking up an NV610 from TB'er Dan Knowlton, I've been trying to find the right amp to drive it with. The thing that got me going on all this was plugging my Tobias into an SVT at the studio, and witnessing synergistic magic. Anyway, I tried a DB750, and while that is the absolute sledgehammer bar none, some of it's tones didn't do it for me. In fact, the weird thing was that my PLX 1602 extracted some nice pizz tones, but couldn't drive a good slap sound. The DB750 had all kinds of slap tone, but was a little wooly for my preference for a bridge pup pizz sound. So, I had heard all the tones I was after; problem was I couldn't get 'em with one amp. Luckily, I noticed a Trace Hexavalve up for grabs on Bassgear, and this evening it is sitting happily on the NV610. Now, this tone is just what the doctor ordered. Clear, fat, spacious; the whole nine yards. All the tones are there with almost zero tweaking. However, I don't use heavy distortion, so can't comment on that aspect. Anyway, I think I have finally got about as close as possible to a portable SVT that will fit in the trunk of my Honda. So, are any of you familiar with these Hexavalves? Reading some other threads, I infer that the Sovtek KT88's are a good replacement output tube. However, there are no trim pots to adjust plate voltages. Is this still a good upgrade to think about? Any other info/advice would be appreciated. Meanwhile, I'll be wondering in the daze of tone heaven. Yeah.