The EVH 5150III Combo is a tube combo amp featuring two Celestion G12M speakers and three channels (Clean, Crunch and Lead). Powered by seven 12AX7 preamp tubes and two JJ 6L6 power tubes, it also features front-panel adjustable power output from 50W downGain, low, mid, high, volume, master presence, rear master resonance, power level and reverb controlsBuilt-in DSP reverbOne headphone output jackTwo speaker jacks in parallelCustom shaped birch with unique internal baffling constructionVintage chicken head knobs50-1W adjustable power levelMaster resonance control