The ZDA4.6 is an extremely versatile Digital Signal Processor (DSP) with a built-in 4-channel amplifier. The 6-channel DSP gives you all the features needed to create your perfect audio setup, such as fully adjustable filters, EQ with adjustable Q value and time correction.
This feature-packed amplifier does not end there though, a built-in 4x60W RMS amplifier runs off channels 1-4 on the DSP so you have full control. If you want even more power, you can even use the 6 channel RCA outputs that are also controlled by the DSP.