2 4 HD KIT - miniDSP

the A/V receiver’s subwoofer output, the 2x4 HD can be used to adjust gain and delays individually for each subwoofer, and provide parametric EQ both singly and for all subwoofers: The 2x4 HD Kit allows construction of the 2x4 HD circuit board into more sophisticated builds that combine other components such as power amplifier boards.