MXR CS CSP233 Micro Amp+, clean boost, up to +26dB boost, 100% analog, true bypass, controls for gain, treble and bass, metal footswitch, ¼" in and out, red status LED, metal housing, operation with 9V battery or optional 9V PSU (#108096) not included, dimensions incl. sockets and pots (WxHxD): 65x52x110 mm, made in U.S.A.