Tascam MH 40 Headphone Amplifier SP Sound Percussion or 4 ohms Half power switch 210000005899 or 4 ohms Half power switch drops the output to 50W 4 x EL34 power amp tubes 5 x 12AX7 preamp tubes 3 band EQ on each channel Global Presence 2 Master Volume controls Global Master Volume Boost with switch and level control 12 way Punch attack control on Crunch channel Pre gain Boost switch on both channels Built in MSDI microphone simulated direct XLR output Line out with level control Active effects loop with send and return level control Tube bias adjustments on back panel 4 button footswitch included Made in the U Custom molded interior with full neck support A Tascam MH 40 Headphone Amplifier in Good condition we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting