EXTENSION CONTROLLER + 4x500W AMPLIFIER MODEL LDA NEO 4500-E. This extension unit for the PA/VA system LDA NEO includes 4 class D power amplifier channels of 500W or 2 class D power amplifier channels of 1000W at 100V/70V lines. A+B wiring option. 8 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.