Earthquaker ZEQD-Pre All-Analog Tube Preamp with EF86 Tube, Passive 3-Band EQ tone library or the micro USB port

or the micro USB port to bus power the AC-3 via your computer

and Flavor FX while generating real-time vocal harmonies based on chords from a connected guitar or keyboard for richer

complemented by the EVH D-Tuna for accurate drop-D retuning

articulate high end and striking wood grain

Earthquaker ZEQD-Pre All-Analog Tube Preamp with EF86 Tube, Passive 3-Band EQ tone library or the micro USB portAll Analog Tube Preamplifier Overview The ZEQD Pre is an all analog tube preamplifier that brings together EarthQuaker Devices' innovative pedal design and Dr. Z Amplifications decades of tube amp expertise. With a passive Three Band EQ, professional headphone output, balanced XLR output, and onboard analog cabinet simulation, the ZEQD Pre delivers authentic tube warmth and dynamic response in a complete analog amplifier system that fits right on your