All-Tube Amplifier HEAD 100 MK I - until the end of 2001 Darek Kozakiewicz signature   Dimensions: 240×660×290 Power: 100 Wat Power Tubes 4×EL34 Preamp Tubes 5×12AX7 Common Controls: BASS,MIDDLE,TREBLE Power Stage Controls: PRESENCE,RESONANS Two channels  Two MASTERs (MASTER A, MASTER B) Adjustable Line-out  FX Loop  Speaker Outputs 4/8 Ohm

All-Tube Amplifier HEAD 100 MK II - until the end of 2002 Dimensions: 240×660×290 Power: 100 Wat Power Tubes 4×EL34 Preamp Tubes 5×12AX7 Separate Controls: BASS,MIDDLE,TREBLE Bright Boost for each channel  Power Stage Controls: PRESENCE,RESONANS Two channels  Two MASTERs (MASTER A, MASTER B) Adjustable Line-out  FX Loop  Speaker Outputs 4/8/16 Ohm

All-Tube Amplifier HEAD 100 MK III - until the end of 2003   Dimensions: 240×660×290 Power: 100 Wat Power Tubes 4×EL34 Preamp Tubes 5×12AX7 Separate Controls: BASS,MIDDLE,TREBLE Bright Boost for each channel  Power Stage Controls: PRESENCE,RESONANS Two channels  Two MASTERs (MASTER A, MASTER B) Adjustable Line-out  FX Loop  Speaker Outputs 4/8/16 Ohm