Audio out to RCA input on new Sony TV's?

I currently have an older Sony HDTV with RCA connectors for audio out, to RCA connectors, into my preamp (and expensive $8K stereo).

All new current Sony HDTV's now have, Audio Out : 1 (Side / Hybrid w/ HP).

Howe do I get analog audio into my preamp with the same quality?

Do I now need a D To A converter?