I am so pleased to let everyone know that the low default line out volume level is FIXED. I just installed the newly modded BlueSTAR, replete with the A2DP circuit upgrades and the voice out op-amp bridge in my Passat and I had to return the BlueSTAR volume setting to 5 and turn the phone volume setting on my head unit down to about 25% of max level, and the volume of my caller was still louder than the previous unamplified line out with everything available maxed to 100% (BlueSTAR volume, phone mode volume and output gain).
So get ready to live without bluetooth again in your Phaetons for a week upcoming so you can send your unit back to me for the additional hardware mods. At the same time I add the voice out op-amp bridge, I will also upgrade the A2DP circuit to prepare it for quality music reproduction, upping the capacitance on the four stereo channels and increasing the resistor values to better handle the low frequency ranges in music. Once Chris has completed the A2DP control interface, we will get the software upgrade and be the first BlueSTARs to have the feature enabled. For the curious, the BlueGiga chip in the BlueSTAR can maintain more than one active connection—up to 3 or 4 I think, e.g. your phone and your iPod, or your phone and your iPad, or your phone and your wife's phone and your child'd iPod. The control interface needs to be modified to allow a user to switch between sources using the three button OnStar keypad. It is easy enough to set the phone to override all when a call comes in, but the trick is how do you pair your phone and your iPod, and then choose to listen to a playlist on your iPod? So when that is solved, it will be a software flash using Costar Programming Utility.
Lastly, when everyone's unit comes through, I am going to confirm the DSP program is up to date and then flash the unit with firmware version 12-0117, released yesterday, just for us, to enable the voice out op-amp.