Belcat KA-15 15-Watt Acoustic One Man Band Instrument and Vocal Amplifier-Designed for Acoustic Guitar/Keyboard 15 Watt Acoustic guitar and vocal mic performance amp 2 channels: one is a standard 1/4" jack input for instruments while the other is an XLR input for a mic 2 speakers: one 8" speaker and one 2-1/2" tweeter Separate controls for Volume (channel 1), Volume (channel 2), Treble, Middle, Bass and a Brightness tone switch Headphone output