Here is the difference:
Optimized for lower CPU overhead while utilizing genuine data maps. dl-1425.bin qsound-hle.zip
You are missing the QSound DSP.
The solution is straightforward. The dl-1425.bin file is the correct one, and it should be placed inside a zip file named qsound_hle.zip and stored in your MAME roms folder. Here is the difference: Optimized for lower CPU
If you want to verify that your file isn't corrupted, open your qsound_hle.zip using an archive tool like 7-Zip. Inspect the properties of dl-1425.bin . It must match these exact cryptographic signatures to pass the emulator audit: d6cf5ef5 SHA-1 Hash: 555f50fe5cdf127619da7d854c03f4a244a0c501 The dl-1425
The emulator searches for dl-1425.bin explicitly inside this archive folder.
By ensuring is properly located within qsound_hle.zip in your MAME ROMs folder, you will resolve this audio emulation issue and restore full sound to your Capcom arcade collection.