Audiopipe EQ400BT 4 Band Stereo Equalizer/Crossover with Bluetooth 9 volt output

Graphic center frequencies: 150Hz, 400Hz, 2.5KHz, 15KHz 
Boost/cut: 12dB 
S/N ratio: 100dB 
Frequency response: 10Hz-30KHz 
Maximum output voltage: 9V 
THO: 0.005% 
Input sensitivity: 50mV-3V 
Input impedance: 20K ohm
Output impedance: 2K ohm
Stereo separation: 82dB/1KHz 
Operating voltage: 11V-15V