The 100K has individual level controls on each of its three channels and a simple yet effective master two-band EQ. The three input channels offer 1/4-inch, XLR and RCA jacks for direct connection to any source including keyboards, acoustic instrument pickups, microphone, as well as CD and MP3 players. The 100K includes an internal spring reverb with master reverb control, a front-mounted effects loop, headphone jack and 1/4-inch line output jack. Features: * 100 watt combo amplifier * Three discrete input channels * 12-inch woofer & 1-inch ABS horn design * Internal spring reverb * Solid plywood cabinet construction * Curved all-metal heavy gauge perforated metal grille