Balanced DI with Pre/Post switch to feed the house, Aux Input, Headphone Output for silent practice, Line Out plus “Chain Out” to drive GK’s MBP powered cabinets. A twist lock speaker connector insures a reliable and safe cabinet connection. Power @4Ω 200 WATTS Dimensions 7.75 x 8 x 1.75" 2 LBS Preamp SOLID STATE INTEGRATED CIRCUIT