The Ad Lib Music Synthesizer Card (ALMSC) is an 8-bit ISA sound card released in 1987. It was built around the Yamaha YM3812 OPL2 chip, which can produce 9 channels of FM sound.
The card lacked the ability to play back PCM digital audio, but it was somewhat possible to emulate PCM playback with software. This, coupled with the monaural output, made the card sound less than amazing. Despite this, it was the first successful consumer audio card.