Specifications：                                                                                                                          

* Frequency Response: 10Hz-40KHz

* Noise Level : 105dB

* THD+N@1KHz/0dB: <0.005%

* Inputs : XLR & 1/4" Jack unbalanced

* Link out :XLR balanced

* Output:XLR balanced

* Maximum Input Level: 0/+20/+40dB

* Power supply: 18V DC TO 48V DC

* Battery: 9V Battery

* Input Impedance: >250KΩ

* Load Impedance: >600Ω