BBE 282iR Desktop Sonic Maximizer with Unbalanced RCA and 3.5mm Connections "A full-function Sonic Maximizer +23dB of output headroom (282iX), +20dB (282iR and iQ) 108dB signal to noise ratio Unbalanced RCA and 3.5" "+23dB of output headroom (282iX), +2dB (282iR and iQ)" 18dB signal to noise ratio Unbalanced RCA and 3.5 , DJ system, or instrument rack, you will find the Sonic Maximizers rugged construction and careful electronic design a welcome addition to your sonic arsenal