Fulltone USA Hi-Mu

The Hi-Mu is a dynamic, amp-like overdrive pedal designed to deliver a rich, singing lead voice with touch-sensitive response and exceptional clarity. Powered by four NOS full-size JFETs configured as Mu-Stacks, it behaves much like a real tube amp—reacting to your playing dynamics and cleaning up beautifully when you roll back your guitar’s volume knob.

With plenty of natural sustain, harmonic richness, and focused midrange, the Hi-Mu is tailored for expressive solo tones. Its 3-position Bass switch works alongside the versatile EQ knob to sculpt everything from thick, smooth warmth to razor-sharp bite. The Sustain knob adds gain and intensity, pushing your tone into saturated bliss. Built 100% by hand in the USA and compatible with 9 to 18V power, the Hi-Mu features full bypass and LED status, making it a serious tool for players who want their drive to feel—and sound—alive.