Well, I spent about an hour and a half with it. I can say, it sounds like a Plexi!! It's a LOUD SOB, that I can say for certain, and for those curious about the gain/volume, you have to get it up there, for sure, for decent amounts of gain. The dynamics/touch sensitivity is really impressive. It has that core, mean aggressive flavor - it's in there. I haven't had the chance to really open it up super loud, but I goosed it pretty good for a bit. You WILL need some help, getting into high gain territory. I ran my EP Booster into the Savage Drive, hit the front end, (jumpered) and had great results. That said, to my surprise, the EP into my Zakk Wylde OD yielded better results! Just a KILLER, crunchy tone, nice and aggressive, yet not out of control. Just punchy, and oozes good tone. Clarity, note separation, the whole ball of wax. Totally different animal than the EVH.
This is a killer amp, folks. I know I have some more exploring to do, to get it where I want it. I did roll some preamp tubes, and it looks like the power tubes are JJ's, (I assume, with red lettering/Marshall logos). V1, also a JJ, V2 & V3 had gold logos, which I assume were Chinese, since that's their typical recipe. I put a Tungsol in V1, Mullard CV4004 in V2, and a balanced JJ in V3. Great improvement. Kinda disappointed they didn't use Tungsol EL34B's, like the Mini Jube came with, but oh well. I have JJ E34L's, KT77's, and 6CA7's I can try. I'm thinking the 6CA7's might be the ticket.
In all, I'm pleased. It's not dialed in quite yet, but the tones are in there. NO DOUBT. It's exactly what I wanted, a solid, core Plexi flavor, a hint of aggressive, and takes pedals well. Loop works great too, no issues, noise, pops, no tone suck, etc. Solid. And, lead tones are just to die for. So rich in harmonics, it's ridiculous. Loves my Jackson with the JB, loves my Schecter with the Custom-Custom.
When I had the volume up, and driving it with my pedals, 10-band in the loop, I was nearing Yeti territory. Only this one, SOUNDS like a Marshall!
The only way I can describe it, is I hear QUALITY. Rich, organic, quality tone. BUT, you may STILL need an attenuator!