I will say this though, that the max12 is going to have to really put out on the PWR section to keep up with the LMII. I played last night with 2 guitarists running Marshall stacks and the LMII not only stayed with them but had PLENTY more. I sure hope the Max12 will as well, although the shuttle6 PWR output comparisons to LMII (that are posted) are not as promising as I have hoped...
Having owned an LMII and a current owner of a Shuttle 6.0, I find the Shuttle to be a louder and puncher amp overall than my LMII was. I ran both heads through an Ampeg 410HLF with an 08 MIA Maple neck P bass.
I actually thought the LMII had a slightly warmer sound but IMO no way does it have the bite and punch of the Shuttle 6.0. The Shuttle seems just a tad lighter on the bottom end than the LMII was, but nothing I can't deal with by using the EQ. One thing I can vouch for at least on the 6.0 is if you try to always run the amp where the clip/limit light never comes on, you are NOT using the amp to it's full potential. There's lots of headroom still when that light comes on so you have to just keep pushing it. Your ear will tell you when the power section really breaks up.
It takes awhile IMO to get used to the clip/limit light on the Genz amps. When it comes on, it doesn't mean the amp is clipping but rather that the limiter circuit is doing it's job. Both my Genz amps, the Shuttle and my GBE1200 will blink those clip/limit lights pretty steady when in use but they never sound like they're clipping and I still have useable headroom with each of them even with the clip/limit LED'd flashing.
One of the main reasons I like the Shuttle 6.0 and the reason I think the Max 12 will be a winner over the LMII is the tube front end. You can get that "just right" amount of grit or OD with the front end that gets you a nice punchy rock tone if you dig in. Back off and it cleans up nicely. I could never get the LMII to do that quite the same way. Considering you have basically two Shuttle 6.0 power sections in the Max 12, you should be quite pleased. Add the fact that you actually get a "mute" button on the Genz amps and it's a winner for me at least.
I think the LMII is a great little amp and will probably get another one sometime, but right now I just like the Genz amps with their tube front ends better.
Keep Low
