Starting with MAME version 0.201, the emulator shifted its audio handling and officially looks for a specific device file:

To ensure you don’t have a corrupt or fake file, verify these hashes:

These two tiny files—often overlooked, frequently misplaced—are the unsung heroes of arcade preservation. They bridge the gap between raw hardware dumps and playable, audible nostalgia. Whether you are building an emulation cabinet, curating a personal ROM collection, or simply troubleshooting a silent game, understanding dl-1425.bin and qsound-hle.zip transforms you from a casual user into an informed preservationist.

If you clarify, I can give you the exact answer.

The file is the internal DSP program ROM for the Capcom QSound audio chip, which was famously used in CPS2 (Capcom Play System 2) and ZN arcade hardware. In modern versions of the MAME emulator (starting around version 0.201), this file is a required component for any game utilizing High-Level Emulation (HLE) of the QSound chip. Technical Specifications File Name : dl-1425.bin

: Unlike basic mono emulation, these files allow for the distinct stereo panning QSound was famous for.