TASCAM MP-BT1 Portable MP3 Bass Trainer Standard

240-song memory capacity (based on average 4-minute MP3 encoded at 128kbps). Variable Speed Audition changes the speed of the MP3 playback without changing the pitch. Pitch control in 1% steps so you don't have to re-tune. Seamless looping for practicing tricky passages. High-impedance 1/4" bass input. Bass multi-effects. Bass Cancel effect eliminates the bass part from the recorded song so you can play along. Built-in tuner, oscillator and metronome. 1/8" Headphone output. Built-in rechargeable battery with 9-hour reserve (rechargeable through USB port or optional power supply). 128x64 graphic LCD display. USB jack. Auto Power Off and Hold function.