I have an MiSi Trio in my GA3. It has no controls (my GA3 was acoustic only) but I don't find that to be a problem. I do mostly open mics and have never had a problem with the host/soundman getting an adequate signal. Plugged into my Fishman Loudbox Mini at home, it seems to have more output than my ES2 equipped 224ce. I have never had it lose its charge but the longest I ever had it plugged in was 2 hours. To my ears, the Baggs Element sounds less "quacky" than a lot of USTs and no more so than the ES2. I really like not having a battery.