Joyo JT-305 Chromatic True Bypass Guitar Bass Stage Tuner Metal Casing New The JT-305 is specially designed for Stage. This has No Sound Loss by True-Bypass, and when in tuning mode guitar sound is muted. The display can be viewed very easily with it's Large LED display. The indicating light flows from Left to Right, so it is very easy to pinpoint and fine tune. There is no battery loss when in bypass mode. Features: Compact pedal sized guitar/bass tuner Sleek, black and tough aluminum die-cast body A4 Frequency: 436-445Hz (calibrated in 1Hz steps) Tuning Range: 0A(27.5Hz)-8C(4186.01Hz) 100% True Bypass output keeps your tone intact. Choose from four types of display modes: Meter, Strobe 1, Strobe 2, Strobe 3. Compact pedal sized guitar pedal tuner that fits in your pedal board. Large, bright LED meters clearly show any tuning discrepancy. A broad detection range from 0A(27.5Hz) to C8 (4186 Hz). Calibration is adjustable from 436 -- 445 Hz. A 9 VDC output jack is provided for cascading the power supply to other pedals. Sleek, black and tough aluminum die cast body for superb durability. Specifications: Tuning range:0A(27.5Hz)-8C(4186.01Hz) A4 Frequency:436HZ-445Hz(1Hz/steps) Detection accuracy:+/-1 cent Power supply:one 9 v type battery or AC adapter(9 V,600 mA or greater) Input impedance:1 M-ohm(tuner on) Current consumption:maximun 55 mA Battery life:approximately 5 hours continuous use with tuner on (A4 input continuously,Meter mode) Dimensions:76(W)*120(L)*46(H)mm Package included: 1 x STAGE TUNER 1 x User manual