The Gigpro is a single-channel belt clip preamp that will work with most pickups. It also provides 9V phantom power for mini-mics and other phantom powered onboard electronics. They have pared the features down to the bare essentials but you will find everything you need to get the best sound possible from your pickup. The EQ, for example, has only two bands plus a variable low cut but you will be amazed at how flexible and intuitive it is to use.
The circuitry is generally modeled after the ever-popular Para Acoustic D.I. but LR Baggs has made several key innovations. First, the circuitry is 100% Class A and discrete from input to output. Secondly, they have designed the circuitry in a way that makes the sound of the preamp almost tube like. Third, the EQ is entirely passive. Fourth, they have used only the highest grade audiophile components. When you add it up, the Gigpro is the best sounding, easiest to use, most effective and quietest preamp that LR Baggs has ever created. Big things do come in small packages.