Axxess AXGLI-R RCA Ground Loop Isolator 
The AXGLI-R is designed to eliminate ground loop noise in the RCA audio lines of stereo systems with amplifiers without the cross channel interference that is common with other brands of Ground Loop Isolators.
Detachable input and output RCA harnesses allow for the installation of this unit at the head unit or at the amplifier without the need for gender changing RCA barrels while maintaining the correct audio path through the AXGLI-R.
Instruction Manual