I'm trying to decide between the base audio system and the Ultra High Fidelity Sound system. While there are many "is UHFS worth the money?" threads, I didn't find clear answers to many of my questions, so I hope this thread can fill in that gap. What are the differences between the audio systems at the touchscreen interface level? From what I can piece together, UHFS adds a "Dolby" mode and a 3-band equalizer. Is that correct? Are there any other UI differences between the packages? Are there really just 11 volume settings? Hardware-wise, it sounds like there are only speaker-level outputs, no line-outs. Correct? Do we know how many channels the amplifier has? Is there just one fader control (front/rear) and one balance (left/right), or is there also a subwoofer volume adjustment? The Tesla website says they support MP3, AAC, and MP4 formats. Apparently they also support FLAC (thank goodness). How about ogg or wav? Are there any other formats supported that are not mentioned? Apparently music with > 2 channels (4.0, 5.1, etc.) is not supported. I wonder if the hardware is incapable or if a software upgrade might someday enable that... If you order the stock audio system, do the wires exist for the additional UHFS speakers (particularly the subwoofer)? I know that's the case for many ICE cars - they use the same wiring harness for all audio options. Has Tesla or anyone else created an overhead "map" showing where the 12 speakers (UHFS) or the 7(?) speakers (standard) are located in the car? Any answers/additions/corrections appreciated. I'd be happy to add an "Audio" page to the Wiki with all this information (assuming I have permission). Thanks.