For FPGA re-implementations (like MiSTer’s CPS2 core), the binary is often required as an initial hardware load, proving that even in hardware emulation, this tiny file is king.

Based on the internal identifier dl-1425.bin and the context of "(QSound HLE)", this refers to the used by the Capcom CP System II (CPS-2) arcade hardware.

Here’s what is typically meant by “full feature” in this context:

If you are a fan of the following titles, you have unknowingly relied on this file. The most famous Qsound games include:

: Older ROM sets used a file called qsound.bin , which is now considered obsolete by current versions of MAME.

The parenthesis “(qsound hle)” in some ROM pack listings is misleading; it likely means “this dump is used even in HLE mode for initialization tables” or “this is the firmware used if you switch to LLE mode.”