Housed in a beautiful powder coated Blue 16ga.steel enclosure, the first channel is the "Overdrive Mode" capable of Clean Boost or non-compressed overdrive or choose light to medium softer Overdrives all while retaining your guitar's original tone. The Tone knob is a very effective Presence control that can smooth out or add upper harmonics.. There's also a footswitchable second channel "Boost Mode" with its own separate Distortion control for medium to higher gains with a more singing violin-like sustain!
FD2-MOSFET page at Fulltone 's website...