Parameter Frequency range: 500Hz - 980KHz Adjustable channels: 30 adjustable frequency points Channel interval: 0.5-2.5MHz Frequency Response: 40Hz-20KHz Operating range: 50-80M Sampling rate: 48 kHz Signal Distortion: <0.02% Delay: <5ms <5ms Signal-to-noise ratio: SNR ≥ 110dB Operating voltage: built-in 3.7v, 1000mah lithium battery, use 6-8 hours. Note: This product is equipped with an adapter, using this converter can be used on professional equipment such as stereos, amplifiers, mixing consoles or guitar basses.