recording to Reel to Reel directly from "preamp out"

I'm assuming an integrated amp with pre-out also has power-in. Not necessarily but often times the way it is.  

Headphone monitor will be better as that will allow volume adjustment and not require an interconnect.

Its a 5300 Mac It has bars guys. You have to pull the bars so you loose your monitor amps. Unless you plug in headphone no way to monitor and check your playback. Kinda 101 to see if your recording is any good make your tweaks and RE record when you get it right..

I thought of something that might work split the signal where the bars ARE. You know 2 in 4 out cable. That might just work.. and still give you Tone control to both leads OUT.. Use a high quality woven jumper RCA copper/silver or pure silver or pure copper..

That will work one pair of leads back into the power amps and the other to the Reel to Reel.. Loop it back into an input.. You made a tape loop, just no button to engage it.. A hi quality A/B or both switch would work too.

Regards

For best SQ, it's better to plug the source component directly into the reel-to-reel if and when possible (if your integrated contains your RIAA phono stage, obviously not). Not convenient, but if you don't do it often not that big a deal.