1998: DSS80 Speakers
The Digital Sound System 80 stands today as the only speaker system ever released by Microsoft. The three-piece ensemble included two satellite speakers and a subwoofer that had a built-in digital amplifier that eliminated the need for a sound card. The system was also revolutionary for using USB to convert digital sound from one's computer to analog in the subwoofer.
Sadly, the DSS80s also had a volume control problem that would set volume to maximum or minimum instantly, countered only by hitting the mute button. Despite the system's decent quality and innovation, Microsoft didn't expand its speaker selection.