FOR [[tag1_and_minis]]



separately 10% OFF

Place your trust in our experience


The quickest audio install


BMW and MINI models
available to upgrade


Countries we shipped to


The earliest BMW production
date we offer our upgrades for.


Custom DIY tutorials

We're the only BMW audio brand like this.

Alpha One was founded by a couple of guys passionate about modifying their BMWs in every possible way with a hefty focus on audio improvements.

Our first big hit revolutionized the game of BMW audio upgrades with the world's first fully customized amplifier upgrade: the Alpha One Amplifier.
While our plug & play amplifier kept gaining momentum, we were working hard to create direct drop in replacement upgrade speakers for late model BMWs, to create a complete BMW sound system upgrade. Thanks to our superior knowledge of everything BMW and an unparalleled level of attention to detail, the Alpha One speaker system came out of the shadows and onto the market.

But! We haven’t said our last word yet — if you’ve been following us for a while you should already know we can’t sit down for too long, so you can expect even more to come.

Alpha One BMW Speaker Upgrade for [[tag1_and_mini]]

Increased clarity, power, and bass
DIY Plug and Play installation
Premium materials and build
2-year warranty and professional support

All New Alpha One Amplifier
for [[tag1_and_mini]]

1420-1680W MAX Output Power
Tailored for your and musical preferences
Customizable tune
DIY Plug and Play installation

Buy audio upgrades

Get any upgrade 10% off or grab speakers and amp set 15% off with coupon XMASALPHA. no products
Check other products on our BimmerTech page

Buy audio upgrades

Get any upgrade 10% off or grab speakers and amp set 15% off with coupon XMASALPHA.

Woofer set

Alpha One Woofer set
FROM $[[PureBassPrice]] $[[pbBasePrice]] $[[defPrice.PureBass | saleDisPrice]] $[[defPrice.PureBass]] Not compatible

Front & Woofer set

Alpha One Front & Woofer set
FROM $[[DriversChoicePrice]] $[[dcBasePrice]] $[[defPrice.DriversChoice | saleDisPrice]] $[[defPrice.DriversChoice]] Not compatible

Complete set

Alpha One Complete set
FROM $[[StudioSoundPrice]] $[[ssBasePrice]] $[[defPrice.StudioSound | saleDisPrice]] $[[defPrice.StudioSound]] Not compatible

Amplifier upgrade

FROM $[[PowerClarityPrice]] $[[pcBasePrice]] $[[defPrice.PowerClarity | saleDisPrice]] $[[defPrice.PowerClarity]] Not compatible

Free worldwide shipping

Customized [[tag2_and_mini]]
audio upgrades

You are here for one reason – you wish your F33’s sound system could raise the roof in your BMW. And by that we do not only mean enhancing the power of your stereo, but a spectacular effect of detailed, well-balanced and accurate sound coming from your 4 Series speakers.

BimmerTech’s F33 audio upgrades will bring it to you. However, there is something more you can expect – the cherry on top that was never offered before by any car audio manufacturers. We will equip your amplifier with a custom DSP tuning file, which is going to deliver you sounds adjusted to your musical preferences – the genres you are listening to and the way you prefer listening to them.

The number of speakers in F33 and the presence of an amplifier will highly depend on your stock system though. So before getting excited about an upgrade, look up whether your F33 features Base, Hi-Fi (S676A) or Harman Kardon (S688A). You can check it by decoding your VIN.

If you are a hands on DIY-er, you can also try to install our audio upgrades yourself. It’s a straightforward process – nothing more complicated than a bit of disassembling and removing your original F33 BMW speakers / amplifier, and putting the new ones in.

BMW sound system blog