Audiopipe, 5 Band Graphic Equalizer W/ Subwoofer Control, 1/2 Din, Red Or Blue LAudiopipe, 5 Band Graphic Equalizer W Subwoofer Control, 1 2 Din, Red Or Blue Lt 5 Band Graphic Equalizer W Subwoofer Control Output channels (left and right): Front Rear Subwoofer Input channels (left and right): Input 1 Input 2 Input range of gain control (dB): >40 Maximum input voltage (V): >10 Input impedance (K Ohms): >20 Maximum output voltage (V): >15 Volume gain (dB): >40 3dB low pass frequency (Hz): 50 80 120 3dB high pass frequency (Hz): 80