Digitech JamMan Express XTThe DigiTech JamMan Express XT is the most full featured compact looper on the market. It's simple, small, and very sophisticated. With true bypass, 10 minutes of stereo looping, Silent Clear, and JamSync the Express XT is a perfect looper for your pedalboard or addition to your JamMan XT looping set up. It's incredibly easy to use with dedicated LEDs clearly showing its status. The Express XT works right out of the box using a 9V battery (included)