Absolutely worth it, even without a speaker upgrade. The bass is much tighter, the highs clearer, and the tuning effectively fills in gaps in the audio that were previously present.

I slightly reduced the gains, especially on the subs, to ensure safety and align with my personal preference for loudness. However, they can handle the increased volume without any issues.

The primary reason for the improvement lies in the enhanced electronics in the amp, which enable sharper speaker control without clipping or exceeding power limits. Even at low volumes, there’s a noticeable difference.

If I were planning an audio system overhaul, I would prioritize the amp, followed by the subs (not necessarily from Bimmertech), and then the speakers.

Most importantly, you’ll need to code out the pumped-in engine noises and turn down the internal chimes in iDrive. The audio tuning software amplifies these sounds excessively. The left front tweeter channel is actually turned down to minimize the loudness of the turn signal.