EXTENSION CONTROLLER + 4x500W @ 4ohm AMPLIFIER MODEL LDA NEO 4500-LE. This extension unit for the PA/VA system LDA NEO includes 2 power amplifier configurations at 4 ohm lines: 4 class D amplifiers of 500W each per channel @4ohm. A+B wiring option. 4 pre-amp outputs. Balanced audio. Triple Ethernet port for providing Digital Audio Cobranet, remote control and supervision, and daisy-chain connection with NEO or other NEO-Extension units.