The 4CAT-4I is a versatile 4-channel input box for balanced audio via Cat ethernet cable. Like the 4CAT-4O, it is conveniently packaged for integration into any professional audio setup. Combined with the 4CAT-4O and some Cat ethernet cable, it offers a simple and effective solution for expanding your line system with additional channels.

Kelsey’s 4Cat system passively transmits 4 channels of line/mic and/or AES audio over a single piece of shielded cat cable (Cat5e, Cat6a, or Cat7). This innovative approach retains the reliability and clarity of traditional copper line systems but eliminates the bulk and reduces costs significantly.