I remember getting one of these. Looks like absolute garbage to my 2023 brain, but in 1998 I was just happy not to be using my keyboard to play pirated ROMs on ZSNES any more.
Sound was working, but transparency wasn't, so in certain parts of certain games e.g. 600 AD in Chrono Trigger where there was a fog effect, it would be opaque, and you'd have to go into the emulator menu and switch that layer off to see what you were doing.
But hey, it ran at playable speeds on a Pentium 1 / 100Mhz so it wasn't all bad.