Step On It! This is the accesory you can't afford to miss if you own an RH450, RH750, Staccato'51 or Blacksmith amp - plain and simple. In essence, you get a super handy tuner indicator right at your feet, a mute switch and three preset footswitches for instant access to the presets you've created on the amp.  Oh, and it draws it's power directly from the amp so no power supplies or batteries.  Features High-quality amp accessory pedal gives you floor-based preset and tuning control with a built-in tuner display Large ultra-precise chromatic tuner display helps you tune up exactly Three preset footswitches let you change amp settings quickly and easily Mute footswitch allows silent tuning Draws all power from amp - no external power required Compatible with RH450, RH750, STACCATO'51, and BLACKSMITH Designed and engineered in Denmark Specifications Dimensions: 340 x 55 x 60mm Weight: 0.8 kg / 1.6 pounds Foot switches: 4 x high quality foot switches and illuminated light ring Tuner indication: 30 bright red LEDs Power: Powered from RH450 Amp Connection: 5-pin DIN connector in shielded connector well