4X SOURCE / 4X ZONE STEREO AMP POWER AMPLIFIER - INBUILT DACPro2 PRO 1323 4 Source 4 Zone Stereo Audio Power AmplifierWith a diverse range of inputs including digital optical or coaxial and dynamic microphone inputs and the ability to adjust each zones volume independently the PRO1323 is a quick and easy way of adding audio in up to four rooms. It also features a Loop out for expanding to another unit increasing the number of zones further Key Specifications Four in and five outIN 1x Digital Optical Coaxial