I used a behringer mixer and a sterling ST-51 on both my cobra 29 lx and a 148f, I also had a samson compressoor in the chain as well, always had great reports on the clarity and such, folks always asking WTF I was talking on. The mixer was a Behringer 1222FX model, I only used a very slight amout of reverb because it sounded nice, the mixer choice was because that was the smallest one they had available with a post EQ built in, in order to get the sound right I had to scoop the mids a fair amout, so the post EQ was pretty inmportant as I didn't want to have to run a seperate unit and risk RF bleeding into the whole setup. Works great and still does, I currently run it on my DAK 9, it can be heard on youtube, just search for 137nashville and you'll find it, if you find 456's watergate from O.K on there, take a listen to his gate of the same conversation, pretty neat, although I'm only running an Imaxx 2k with around 300 watts, so he hit me a whole lot harder than I did him. I built my switch box out of a plastic box from radio shack, maybe $10 worth of stuff and a donated mic cord and plug from some junk.