Koch Amps The Greg, Tube Combo Amplifier For Electric Guitar, Greg Koch Signature Model, 3 Channels, Power: 50W, Equipped with: 2x 10"" Jensen Falcon C10-40 loudspeakers, Preamp tubes: 6x 12AX7, Power tubes: 2x EL34, Closed-back housing construction, Controls: Presence Master - (2 x) Drive - Volume - Bass - Middle - Treble, Switch: Reverb> Tremolo / Tremolo> Reverb - Pentode (full power) / Triode (half power), Effects: Reverb - Tremolo, Effects loop: Buffered serial or parallel with volume control, Connections: Input (6.3 mm jack) - FX Loop Send and Return (2 x 6.3 mm jack), Footswitchable OTS (Output Tube Saturation) with drive and volume controls, Footswitchable tube tremolo and reverb, Dimensions (W x D x H): 65 x 30 x 54 cm, Weight: 26 kg, Incl. 5-Way footswitch