The Hughes and Kettner Tubeman. It is a 4 channel tube amp expander, recording pre-amp pedal. This is the original version. It is all analog and features a 12AX7 tube for distortion. It can be used a floor effect before any guitar amp, or as a recording solution in the studio. Three tone controls plus a mid boost allow different sounds, while the amount of distortion is adjusted with the gain control and a selector switch to choose one of four different gain patterns (rock, blues, funk, jazz). There is no headphones out, but outs for the mixer (with speaker simulation) or to the guitar amp (without speaker simulation).