Behringer Powerplay P16-I 16-Channel 19'' Input Module Converts 16 analog inputs into 24-bit digital audio to be transmitted via standard CAT5e cable 2 x 8-channel ADAT* optical inputs with auto detect and priority select 16 balanced, high-headroom TRS audio inputs State-of-the-art 24-bit A/D converters for premium audio quality 4-position gain switch per channel