Adams Digital Pre-Amp 4 Band Parametric Equalizer 
Model: EM-401(EMPIRE Series)

SPECIFICATIONS
USB Port 
TF/MicroSD Card Port
MP3/WMA Audio Format Reader 
Power Supply: 11 - 15V DC Neg. Ground
Max. Output Voltage :  7V RM
Pre Graphic Frequency: 50Hz, 315Hz, 2.2KHz, 12KHz
Equalization Range: ±18dB
Subwoofer Frequency: 30 ~ 120Hz 
Input Impedance: 15K Ω
S/N Ratio:  90dB
T.H.D.: 0.05%
Channel Separation: 70dB
Frequency Response: 15Hz ~ 30KHz (-3dB)