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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]]
All New Alpha One Amplifier
Buy audio upgrades with Xmas dealsGet any upgrade 10% off or grab speakers and amp set 15% off with coupon XMASALPHA.
Check other products on our BimmerTech page
Buy [[tag_1]] audio upgrades with Xmas deals
Get any upgrade 10% off or grab speakers and amp set 15% off with coupon XMASALPHA.
Front & Woofer set
Free worldwide shipping
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If you’re here, you’re perfectly aware that your E91’s stock sound system isn’t gonna cut it for the long run. Even though for now it might be acceptable, with BimmerTech audio upgrades your 3 Series sound is going to get incomparably improved. And by improved, we mean more powerful, punchier, cleaner, more accurate and… adjusted to your musical taste.
Using DSP tuning, BimmerTech amplifier will arrive at your doorstep tailored to your E91’s size and your musical preferences. Before shipment, specify what music you like to put on while driving and whether you listen to it at moderate levels or much louder. We’ll tweak the audio settings to make it sound ‘yours’ straight from the beginning.
As for the available BMW E91 audio upgrades, the amount of speakers or whether you’ll be able to get an amplifier or not will vary depending on your original system. In the case of E91 they are: Base (Stereo), Hi-Fi (S676A), Top Hi-Fi(S677A), Harman Kardon (S688A) or Individual Audio System (S752A). To make sure which one you have, decode your VIN.
The install is an approachable project even for beginner DIY-ers. Nothing more than a plug & play process of disassembling and removing your factory E91 BMW speakers / amplifier, and fitting the new ones in. Everything is fully reversible.
BMW sound system blog