I like the way the nobs click into place so they dont move if I get pushed around. Really the 1/2 db difference its noticeable till i open the music in soundforge. I bring down the one channel .64db and its fine.
I guess I need to get some better batteries just to see if the 2-3 db difference is because of the cheap battery. Moke, what kind of 9v do you use in your MMA6000?