EXTENSION CONTROLLER + 4x250W AMPLIFIER MODEL LDA NEO 4250E. This extension unit for the PA/VA system LDA NEO includes 2 power amplifier configurations at 100V/70V lines: 4class D amplifiers of 250 W each or 2 class D channels of 500W per channel. 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.