The Darkglass Electronics Microtubes X Ultra is the ultimate preamp pedal for the bassist looking for a studio-quality tone. The X Ultra features a multi-band distortion, a six-band EQ, a balanced DI output and headphone output both with cabinet emulation built in (cabinet switchable with the included USB cable). Oxygen Music is proud to stock a wide range of Darkglass Electronics amplifiers, cabinets, and pedals including the Microtubes X Ultra preamp pedal.