OK. So, it seems that you have the Oppo and the speakers and that you want to replace the Kenwood receiver with Mac separates. If you are willing to use the analog audio outputs of the Oppo, you can buy a used, older non-HDMI Mac processor but I still do not think you can get one of those plus a multichannel Mac amp (or monoblocks) for $2K.
If anyone else has an insight or suggestions, I hope they will contribute.
Kal
If anyone else has an insight or suggestions, I hope they will contribute.
Kal