No guarantee, but that code looks like a UEI code. The
Lookup Tool says Audio 1502 is intended for use with a YBA Amplifier. 1502 shoots the RC5 IR protocol, device 7.
However, we have here a
CCF file for a Complete Tuner. This shoots RC5, device 20. I used
IrScrutinizer to import the CCF file.
If you have a Comcast or Atlas remote (or other cable company remotes if made by UEI), or a OneForAll, I can probably suggest a setup code and EFCs to manually program the remote. Of course, it isn't clear if the Integrated amplifier uses either of these device numbers, but it is highly likely that it uses RC5. If you want to buy a remote, the RCA RCRP05B (Walmart) can also be manually programmed.
But we don't know for sure which device number to use, or the function numbers. You could ask Audio refinement for a list of RC5 codes for the Integrated amp.