Hartke GT60 Features: 60 Watt 2-Channel Guitar Amplifier 12AX7 Tube Pre-Amp Section with Independent Channel Gain Bass, Mid (channel 2 only) and Treble Controls for each channel Built in Spring Reverb and Effects Loop Send/Return Jacks 1/4-inch Stereo TRS CD Input Jack; 1/4-inch Headphone Jack Jack for channel selection footswitch