Yesterday afternoon, while driving to Home Depot to return a rented ladder, I had windows rolled down and I was listening to Sam Smith’s Latch at about 70% of the volume (bass sound good on this song). When I came to a red light and the auto start/stop engaged I realized that the bass cut down substantially while the engine was off then, as soon as the engine re-ignites, the full bass comes back on. I monitored that behavior over the next few engine shut downs and it did it every time. This isn’t noticeable at volumes below 50%, probably because amplifier doesn’t draw that much energy at lower volumes. I am fairly confident that is the way it is supposed to work to save energy but I still find it odd. However, you do get full bass it the engine is fully off. Has anyone noticed the same?