The CR6S STEREO MICRO CRUSH PIX practice amp builds on the reputation of the massively successful MICRO CRUSH model first launched in 2006. The highly portable, battery-operated (2 x 9v batteries) CR6S compact amp has two speakers for full stereo sound, plus line-out/auxiliary-in sockets. It includes a 2.5mm stereo jack socket to plug in your Ipod/MP3 player (and an Auxiliary control to adjust the volume), Gain & Tone controls, Built-in Tuner…an 18 volt power supply is available to purchase separately.