Two main versions. Original has that nice curved bump on top, and no power light. Disk drives in these have no write restrictions, so are good if you want to write full games to disks.

All the NES waveforms are a bit wonky, but my favourite NES sound is the triangle wave. Nice bassy, airish, 'bah' sounds.

• Why Is Your NES A TV Station? (That's Weird) - Video by Cathode Ray Dude on the NES's RF output.

• Diskun yellow is (CMYK) M30%, Y100%. So Hex #FFB300.

• Notes on NES Games