Those are line-level outputs... RCA out from there into a Stereo Amplifier, then to your speakers...
Atarian since 1980
STs: 1040STfm, Falcon 030 w/ 14MB, 10GB internal HD and BlowUp graphics adapter
8bits: 800XL w/ 32-in-1 OS and Supervideo 2.1 Upgrade, Happy 1050, APE (Registered), Commodore 1702 Monitor and PC storage unit
Wish list: MegaSTE, 130XE, 65XEGS