I saw this on an old post:

"In the TT, the Bose system only has one set of L+R pre-amp inputs. All of the balancing of the speakers is actually performed by the Bose amplifier. This is most evident by the fact that you can't perform any front/rear fading in the Bose setup, but you can in the stock setup (at least on the TT Coupe). In the TT, the loom connector is configured with many more pins than it actually needs, as it comes from the A3/A4. If you look at the wiring diagram, there are two sets of pins for front and rear pre-amp inputs. On the TT with Bose, only the front pre-amp connectors are actually used."

I swear using the equalizer in v1.02 I got my rear speakers to do something. The car sounded *good*. Right now it sounds entirely front driven.