Starved plate is only using one side of the tube to get some "toob" harmonics/saturation/distortion. Which is fine. It is what it is. The ART TubeMP is not a good sounding box to my ears for critical stuff but is good for effecty things
like bass DI or something. I have an MPA Gold with NOS Mullards and it's nice. I've worked with it for a couple of years now and can get good recordings from it. I just got the Toft ATC-2 and it's pres are not tube, not quite high-end, but useable and actually a bit of a step up from the MPA as far as overall clarity and "bigness" on a reasonable controlled shootout. Most of the time, sometimes the MPA is still the choice. I don't have a Pacifica to go up against, though. I'm sure the Tubefire8 is just as useable. I've had 3 songs on small market radio in Canada last year I cut with the MPA and a 57, Apex 460 or SP C1. Just sayin...
Strat, Cort C4Z Bass, K-Yairi Semi-acoustic, Sonar 8PE,Drawmer 1968ME, Apex 460 (modded), SP C-1, SM57, Apex 205(modded), Blues Jr. amp, Boss GT-8, Roland D20 for Keys/midi, Yamaha DTXpressII, M-patch2 monitor controller, Konnekt48, SCA n72's, S-Patch Plus patch bay, Adam A7's, various plugs and softs.