Str K670p Manual - Sony

Unlike modern receivers that auto-detect, the STR-K670P requires you to manually assign the optical and coaxial jacks. Via the remote:

Due to the age of this model, Sony no longer hosts the manual on its primary support site. However, several safe, reputable archives still host the original scanned PDFs. —it is freely available as a public document. sony str k670p manual

Hold down the MUTING button for 10 seconds. The display will show “SLEEP 60.” Press MUTING repeatedly to cycle through 90, 120, or OFF. This is not listed in the quick-start section. Unlike modern receivers that auto-detect