I was looking for a headphone amp at home the other night and plugged my Bassmax into the ME-50B multi effects unit. It turns out that the Boss has a 1 Mohm input and sounds great with the Bassmax. In fact I liked it much better than my Fishman Pro EQ. I know it looks goofy with the big bass, but having a tuner, volume pedal, EQ with parametric mid, compressor, and reverb (just a touch for air) in one piece of battery powered gear is a nice thing. At my regular church thing, I plugged into the effects return on my amp and was able to control volume very nicely with my foot so I could turn down when I wanted to dig in, and up a little when I wanted the sustain. When we took a break, I just set the pedal all the way down. I don't see myself using any of the other junk on this box with my upright, but for a $300 piece, it works pretty well. Just thought I'd share. I guess I could have put this on the end of the effects thread, but I am not really using it that way.