Engl Powerball II E645/2, Guitar Head Amp, All tube head amp, Power: 100 W, 4 Channels with 4 gain controls: Clean Gain 1 - Crunch Gain 2 - Lead Gain 3 - Lead Gain 4, Two tonally different lead sounds, 2x Master volume, Electronic Power Tube Monitoring, 6L6GC Tubes, Electronic power amp monitoring, Adjustable effects loop (parallel - serial), also controllable by foot, 2 Bottom Sound switches for Lead Channel 3 and Lead Channel 4, Depth Punch, Mid Boost switching, Adjustable Noise Gate in lead mode now also controllable via foot, Dimensions (L x H x D) 71 x 27 x 27 cm, Weight: 21 kg, Made in Germany, Footswitch optional - 181665 Z9