Features Factory Radio Speaker Hi-level inputs Balanced Inputs RCA Low-Level inputs Integrated Line Driver output Variable Subsonic Filter Variable Gain Adjustment with Clip LED indicator Auto Turn-On Audio Signal Detect +12V Remote Output (for factory radio integration) Selectable Ground Isolation Removable Power/Speaker Terminals Audiophile Tiffany RCA inputs Includes Remote Level Control with Effect Defeat Specifications Input Sensitivity Hi-Level 2-20Vs - 4-40V (internally selectable) RCA 4K