Bluetooth receiver connect to CD Player?

dgoldfield

Estimable
Dec 26, 2015
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Novice here. I have an old Onkyo receiver (TX-SV515PROII) with no optical/digital connection and no AUX connection. But my Onkyo CD player (DX-C606) does have an optical connection. Can I simply connect a Bluetooth receiver to the CD player's optical port and play audio from laptop/smartphone/ipad through the wired speakers?
Will my 24-bit HD Flac files lose HD since the CD player is connected to receiver via RCA Coax cables?
Which Bluetooth receiver is best?
thanks for you help!