When asked I've told a few here, the MM may not give you the tube-grindy tone they're wanting, compared to other amps that do that so well. But for all the power and EQ features this Peavey amp has, I've said, put your favorite tube-style pedal in front of it and I think it'll kill. There is a thread here where someone asks about "heft" in SS or micro amps, IIRC. To my way of hearing tone, this MM1000 gives me more heft to all my notes like none of my other amps have. Now, I think this tone/feel is inherent to this Peavey amp, so maybe if I took time to dial it in my GK, GB, etc. other amps they may get there too.
But it just comes so easy to this Peavey amp. I found this out first thru my Gen2, BF BT-T cab but later also thru my GB NeoX 112T cab. Just so much weight to each note. But that could just be the tone I like and shoot for, others may not. And at gig a couple weeks ago, late in the nite, last set. I did dial up the Gain knob to about 3:00 and backed off the Master Volume, about 10:00, to see what it might do. Darn rig got plenty grindy enough for me with my MIM ADJ-V, though that's not a tone I often shoot for. It was fun to hear it can do that pretty well, IMHO.
Otherwise, I use it to get gobs of clean, big lows and a very good mid-tone as well. And now that I've added the fDeck HPF-3, it's giving me other optional tones to try that I am liking. This amp more than any of my other amps is giving me so many tonal options like none before. Some may not want this and are going for a certain sound/tone they always want to hear from their rigs. And that's cool too.