The EQ210 10-BAND STEREO PRECISION EQUALIZER is an effective problem solver where a small, stereo graphic equalizer is required. Each of the ten frequency controls, on standard ISO centers, offers 12 dB of boost/cut. The overall Level control also boosts or cuts the signal 12 dB. The IN/OUT jacks are interchangeable, so you may input on one type and output on the other. Input and Output jacks are Stereo RCA and 1/8" (3.5mm). The 12 VDC power adapter is shipped with the unit.