Rolls EQ210 10-Band Graphic Equalizer Stereo equalization - 10 frequency controls on standard ISO centers 12 dB of signal boost or cut for each frequency level control - Overall Level control with 12dB of signal boost or cut Active Bypass switch in the event of a power loss Stereo RCA and 1/8 inch (3.5mm) Input and Output jacks 12 VDC power adapter included