NEDSP1062 Module (Amplified DSP Noise Eliminating PCB Module). This module incorporates an amplifier gods power and has a microcontroller connected to a small keyboard. The microcontroller and the keyboard have a button to control all operational functions of the module. The module can be ' retrofitted ' (i.e. fixed Additionally as your system) into the extension of additional speakers as for Kenwood SP31 21/23 software, eIcom SP20/SP8, Yaesu, or used to ' revive ' your old receiver/transceiver putting the module in your speakers into the speaker apparatus (space permitting). The module is provided with the generic instructions, a DC fuse, mounting kit specific to the Kenwood and Yaesu SP31 SP8. Requires 12-18V, it included the cable and fuse.