I demo'd 2 of these units at local GCs yesterday.
I can't do a LMII comparison because I'm not familiar enough with the amp. Also, the GCs were very busy and somewhat loud and I didn't have my own bass. But I can speak to the quality/aesthetics and first impressions:
* Looks: Shape, and general layout is very attractive. But I don't like the sparkly thing. Although, you can't notice it from even 2 feet away as has been mentioned. I just wish they had done a nice brushed finish and possibly a two-tone deal for that central oval. Overall, I dig it. I'd enjoy having it perched on my cab!
* Lettering: Too small and the quality of it was a little suspect - looks like it might be able to rub off as someone has mentioned, but that's conjecture. Will be difficult reading on a dim stage. Of course, if it becomes your main head you'll just know where everything is (maybe?).
* Knobs: Could be sturdier, ala the GK SHuttle (which are nice knobs!) but seemed just sturdy enough.
* Boost problem on 1st demo unit: When I clicked in the Boost, the Master-B knob had no affect on the volume. I concluded that it was set at max or near-max, but the knob was not controlling it. Yes, the knob was firmly attached to the pot - not like a set screw was loose or anything. Oddly enough, the store said they just received it that morning, and I was demo'ing it at 12:30. I know one other unit arrived DOA, and I suspect this one arrived with a faulty Boost.
Ok.... I went to GC to demo Stingrays and Sterlings. The MB2-500 was just a bonus. So my goal was to see how the punchy, growly, aggressive MusicMan basses would sound through this rig. In a word, Grrreat!


Obviously, with the basses I had, I can't say how transparent this head is (and I wasn't concerned with that myself) but it was definitely transmitting all the punch, growl, and aggressiveness from the basses I had. Very enjoyable! To me, it had the grit and clarity and punch I was looking for. But remember, I have about 15mins experience with the LMII.
If subsequent reviews are looking good and I'm still happy after a more comprehensive demo, I can see getting one of these.
-M