I have a generic DAC that works well, Model Number RH-618, converting optical audio to 5.1 surround. It is typically called "5.1CH Audio System DTS/AC3 SPDIF Audio Decoder" and has a few brands associated with it such as Ranhe, Panlong, and others.

How can I find the IR volume codes? If I could simply learn of a brand name receiver with the same IR codes, then I could program my TV remote (LG) to change its volume commands. THANK YOU for any ideas!
-Bill

Here's one online:
[Link: aliexpress.com]

Another:
[Link: ebay.com]