I currently have 2 PSX and a PSX-AR chained together as per instructions with the input to the 2nd PSX chained to the input of the PSX-AR. ?The instructions for the PSXX-AR show the AR being chained to the output of a PSXX.
What is the rationale for this change? ?Should I just chain the PSX-AR input to the PSXX-AR input or is a PSXX ( or? PSX) required in the circuit to protect the PSXX-AR?