It's no secret that the stock audio from BMW is not the most impressive.
The stock system lacks clarity and bass and the definition you would expect from a big brand car manufacturer.
The factory Harmon package still use's the original speakers but amplified with a DSP amplifier, this is a significant improvement over base audio but can be improved further.
All our upgrades are designed for BMW and Mini vehicles only, we use direct replacement upgrade speakers from Eton, Audison and Rainbow only.
The Audison AP8.9 Bit Processor/Amplifier is our amplifier of choice, it is discreet and compact and packs plenty of power, we make this OEM compatible for seamless no wires cut installation, all our packages can be transferred from one BMW to another, and are designed to not invalidate the manufacturers warranty in any way shape or form.