1.Maximum saturation sound pressure level:<120dB + 3dB.

2.Output sound pressure level (high-frequency mean): 110dB + 4dB.

3.Full range full-ongain (high-frequency mean):30dB + 5dB.

4.Frequencyresponse range:No narrower than 450hz~3000hz

5.Total harmonic distortion: Measured value isn't tobe greater than 10%.

6.Equivalent input noise level:Measured value is to be<30dB.

7.Consumption ofrated power supply current: To be s 10mA