Has anyone used headroom amp with home equipment


I was wondering if anyone has used headroom amp like the micro amp or other models with their home stereo equipment that does not have a headphone jack. If so, what configuration allowed you to use your stereo amp and cd player/transport
Take the signal from a tape out or need main out off your pre-amp. Or loop it from your source through the headroom, if it has a loop, and then to your pre-amp.