\rWhen running power and ground cable for your 4 channel marine amplifier, we recommend using 4 AWG power cable at a minimum. If you are running multiple amplifiers, you may need to use larger cable from the battery to a distribution block, from from the distribution block to the amplifier, 4 AWG should be sufficient. We like the Stinger Marine amp wiring kits. The SEA4247 is a 4 AWG kit with 7m long power and ground wires. The SEA4283 is a 4 AWG kit with 3m long power and ground wires.\r