I just made the hookup to the little RS amp.

I would say there is a problem from connecting the Yam
to the tuner in on the amp. I had to jack the amp up to
full volume to get any signal at the speakers. This cannot
be right.

Maybe I'd need the phono preamp connection to get
any juice. But I'm not going to procede until I know more.

Your suggestion sounds right though and the RS should
be the ideal unit without buying a new piece of gear.

Maybe a y-connect from the subwwoofer out on the Yam to
the left right connects on the RS? I haven't tried the
phono in to check this. What kind of damage can I do?
I've already spent some dough on a repair guy to
fix the RS (amp chip replacement) once for about the cost
of what I paid for it. :-/