You can use the L and R subwoofer out, so bog standard 2 rca to 2 rca, and don’t connect speakers to the sn.
From the manual:
The RCA phono sub out sockets provide a stereo output intended for connection to an active subwoofer. The output signal is a duplicate of the preamplifier output. No low-pass filtering is applied.
Yes it can be done and that’s what I’m doing at the moment.
DIN to RCA converter into socket 3 of the HC. Then RCAs to my power amp.
I had my power amp, a Musical Fidelity Nu Vista 300 power amp rebuilt. New uprated transformers , recapped, “missing” power output transistors fitted, rewired, new sockets…etc.
Its a grunty pair of lumps ( combined weight now over 55kg). All driven by a 72/hc/ndx2/xpsdr as well as a TT.
I’m waiting for an empty house on Saturday to crank it up!