Well, here is my first impressions of the MB212-
Wow! I had played the one I have now with my Geddy and I thought it was terrific, but when I played my Schecter 5 string through it, it was the best I ever heard that bass! I was considering gutting the electronics in it, but I may keep them now. The tone is very flexible, which is a huge relief from the Orange I have. The boost control is great and I love the contour button alot!
As we speak, I am breaking in the amp with Om. I played some Michael Manring through it first so a cleaner bass player could warm it up. I have found that the horn is incredibly useful for the aux input, but when I'm playing, I have it off.
I'll report later on the clean sound as I get to know it better.
Effects - This is my favorite part about the amp!!! I have in my chain a EHX Hum Debugger, an EBS Wahone, EBS Multidrive, EBS Multicomp (I love me some EBS) and a DOD chorus pedal. With my Geddy, the tube settings on the EBS pedals growled at me through the MB212 like I never experienced. The Schecter sang with the tube settings, but when the contour was on and the flat setting on the Multidrive engaged, she screamed so loudly and clearly I knew this amp was one of the best investments I have made.
More impressions and thoughts to come.