This BMW E46 3-Series received a high-performance audio upgrade, with a stock appearance. The original BMW in-dash was left in place and operating, but the client’s high-resolution player was set up to stream lossless audio directly into the system wirelessly. The left knob in these pics is a master volume control, and the right controls the subwoofer level. To allow them to be installed in an ergonomic location, we relocated the hazard indicator and door-lock button to the aft end of the console,  and deleted a useless toll-booth coin-tray.