Wavtech Link2 - Car Speaker Amp Hi Low Level RCA Output LOC Line ConvertorWavtech Link2 Car Speaker AMP Hi to Low Level RCA Phono Output Line Convertor When upgrading your audio system, a good clean signal is critical. The link2 is a versatile little box with a dual personality. First, it is an active, high output low impedance line output convertor (LOC). Like all our products, it has OEM load detect for factory systems that require resistance to function properly. The link2 will accept up to 40V RMS through its speaker