Kurt is right, you bypass the analog control stage by using the DIN output and using a DIN-RCA (or DIN-XLR if you wish) connector (the Audience DIN-RCA and DIN-XLR cables are in MHO the best). If you are using a preamp, I think it is a well worth while investment. Not a night and day difference, but ever so slightly better dynamics and authority through the DIN. Don't get me wrong the output through the standard RCA or XLR is quite phenomenal itself.