6-disc changers are so 1990s. It's called an MP3 DVD.
But to answer your question, no. It's a single-disc unit.
Silly dealer put multi-cd in the autotrader ad!
The Shaker 1000 went to single disc in 2010 for the 2011+ models. If this is a retrofitted headunit out of an earlier model S197 it could be a 6-disc unit. I don't know how interchangeable the earlier units are though.
2012 GT CS Ingot Silver Vert, Edelbrock E-force supercharger with CAI and 3.5 Pulley, Tremec T-56 Mag, Accufab 84.5, Centerforce DF, Billet Yoke aluminum driveshaft, FRPP 3.73 Rear, MRT Performance H-pipe, Bassani axle backs, JL Audio sound, Edelbrock strut tower brace, JPC adjustable UCA, UMI adjustable panhard bar, KW V3 coilovers, Steeda heavy duty front mounts, Steeda rear LCA's, 20" Steeda Spyders with Michelin Pilot Super Sports, Steeda Big Brake Kit ....... it just keeps going.