The Yamaha LC2 Piano Lab 8-Channel Base Unit includes everything a teacher could want: A rackmountable LCH1 hub and SB2 student boxes with stereo instrument, microphone, and computer audio inputs plus output and level controls. The hub is controlled by the LC2 hardwire remote or the optional intuitive MLM software. The remote determines which student the teacher hears, with up to 6 banks of 8 students. Works with any instrument that has an audio output, such as keyboards, electronic drums, guitars, basses, and silent violins/brass. The Yamaha LC2 includes headphones and all the easily replaceable CAT5 cables you need to get started. Easily expandable with 8-channel expansion units for up to 48 students.