> What, this thing has THREE General Instrument AY-3-8910 sound chips?
That's nothing special.
A single AY-3-8910 is probably one of the least interesting sound chips ever made at least in terms of what types of sounds you can get out of with it without using the latest demoscene tricks. I've seen it affectionately nicknamed "the doorbell"
It gets a little less bland when you have three (Bomb Jack) or even five (Gyruss) of them.