I purchased this new, but it has been stored without use. Features: A high-precision tuner that you can customize to your liking. It has a display with good visibility, display customization such as multiple screen orientations, ±0.1 cent accuracy, the ability to switch between needle and strobe tuning modes, and options for buffered or true bypass, incorporating everything you could want in a tuner. ■Specifications Frequency Response: 20Hz to 20kHz Tuning Accuracy: ±0.1 cent THD: 0.001% @ 20Hz -20dBu, 0.001% @ 1kHz -20dBu Noise Floor: -112dBu Signal-to-Noise Ratio (SNR): 98dB @ 1kHz Input Impedance: ~1M Ohms Output Impedance: ~400 Ohms Power: 9VDC center negative (adapter only) 300mA minimum Bypass options: ・True bypass with small signal relay ・High-quality op-amp-based buffer bypass SIZE: 6.2cm(W) x 5.9(H) x 11.7(D)cm WEIGHT: 248g