The Peterson StroboStomp Classic Tuner is the most fully-featured pedal tuner made by anyone to date. A high contrast LCD screen makes this tuner the perfect choice for both indoor and outdoor use as well as for anywhere that lighting conditions are less than ideal. Integrated, fold out, steel mounting lugs at the unit's bottom rubberized plate keep it in place on your pedal board without unsightly tape or messy adhesives. Its ultra-robust die-cast chassis and Switchcraft brand input and output jacks assure a quality tuning even after the roughest of voyages. Also, its unique quick release battery access door steers you far away from having to deal with delicate, easily broken, battery lead wires. The professional quality active DI on board is mutable and lets you select one of three stages of signal attenuation, all while remaining 100% true bypass. Finally, the tuner's side mounted USB jack makes your unit future-proof and custom tailored to be exactly what you need it to be by allowing Mac or PC connectivity for updates and unit user programming/modifications.