BMW Audio Upgrade

Check out our BMW i4 Sound System Upgrade Packages below!

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Take your BMW audio system to new heights.

Choose your setup and commence your journey into extraordinary sound.

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Level 1 Package

Perfect for a clarity upgrade with an OEM look

£675

Duration of installation: 1 Day

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Purchase includes:

Audison Prima 2 way front speakers

10 sheets of Skinz sound proofing

BMW Tweeter Grills - Some vehicles need this (Normally between £50-£180 additional)

Professional pictures

Optional Extras:

*Bass options that can be added to this package!

Audison Prima 10” active sub with 5 sheets of sound proofing - £975 inc installation

Hertz Mille Pro 12’’ sub mounted in a traditional box powered by Mille Power 1 with 15 sheets of sound proofing - £2,000 inc installation

Warranty:

All of our installs have lifetime warranty on parts and labour

Level 2 Package

Perfect option for those looking to do a bigger system in the future

£1,403

Duration of installation: 3 Days

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Purchase includes:

Audison Prima 2 way front speakers

Audison Voce Mid Bass

15 sheets of Skinz sound proofing

BMW Tweeter Grills - Some vehicles need this (Normally between £50-£180 additional)

Professional pictures

Optional Extras:

*Bass options that can be added to this package!

Audison Prima 10” active sub with 5 sheets of sound proofing - £975 inc installation

Hertz Mille Pro 12’’ sub mounted in a traditional box powered by Mille Power 1 with 15 sheets of sound proofing - £2,000 inc installation

Warranty:

All of our installs have lifetime warranty on parts and labour

Level 3 package

Perfect for a volume, clarity and bass upgrade with an OEM look

£2,525

Duration of installation: 5 Days

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Purchase includes:

Audison Prima 2 way front speakers

Audison Voce Mid Bass

17 sheets of Skinz sound proofing

Audison SR 5.600 V2 – Amplifier

Connection grade wiring

BMW Tweeter Grills - Some vehicles need this (Normally between £50-£180 additional)

Professional pictures of the install

Professional video of the install

Optional Extras:

*Bass options that can be added to this package!

Audison Prima 10” active sub with 5 sheets of sound proofing - £975 inc installation

Hertz Mille Pro 12’’ sub mounted in a traditional box powered by Mille Power 1 with 15 sheets of sound proofing - £2,000 inc installation

Warranty:

All of our installs have lifetime warranty on parts and labour

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Level 4 most popular package

Perfect for OEM look surround sound with a custom tuning session

£3,995

Duration of installation: 8 Days

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Purchase Includes:

Audison Prima 2 way front speakers

Audison Voce Mid Bass

Audison Prima rear speakers

40 sheets of Skinz sound proofing

Audison Forza AFM12.14 – Amplifier

Connection grade wiring

BMW Tweeter Grills - Some vehicles need this (Normally between £50-£180 additional)

Tuning & EQ

Professional pictures

Professional video of the install

Optional Extras:

*Bass options that can be added to this package!

Audison Prima 10” active sub with 5 sheets of sound proofing - £975 inc installation

Hertz Mille Pro 12’’ sub mounted in a traditional box powered by Mille Power 1 with 15 sheets of sound proofing - £2,000 inc installation

Warranty:

All of our installs have lifetime warranty on parts and labour

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Level 5 package

Perfect surround sound system setup if you have Harmon Kardon

£4,670

Duration of installation: 9 Days

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Black frame for package

Purchase Includes:

Audison Prima 2 way front speakers

Audison Voce Mid Bass

Audison Prima rear speakers

Audison Prima rear surround speakers

50 sheets of Skinz sound proofing

Audison Forza AFM12.14 – Amplifier

Connection grade wiring

BMW Tweeter Grills - Some vehicles need this (Normally between £50-£180 additional)

Tuning & EQ

Professional pictures

Professional video of the install

Optional Extras:

Optical Module: £649

*Bass options that can be added to this package!

Audison Prima 10” active sub with 5 sheets of sound proofing - £975 inc installation

Hertz Mille Pro 12’’ sub mounted in a traditional box powered by Mille Power 1 with 15 sheets of sound proofing - £2,000 inc installation

Warranty:

All of our installs have lifetime warranty on parts and labour

Level 6 package

Perfect for a complete custom surround sound upgrade with a bespoke tuning session

£6,970

Duration of installation: 17 Days

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Purchase Includes:

Audison Thesis tweeter

Audison Prima 4’’ mid range

Audison Voce Mid Bass

50 sheets of Skinz sound proofing

Custom A-pillars

Audison Prima rear speakers

Audison Forza AFM12.14 – Amplifier

Audison Forza AP F1D – Amplifier

Signal summing device

Connection Grade wiring

Hertz Mille Pro 10'' sub

Traditional Sub Box

Tuning & EQ

Professional pictures

Professional video of the install

Optional Extra:

Optical Module: £649

Warranty:

All of our installs have lifetime warranty on parts and labour

Level 7 package

Perfect for those who have a relentless pursuit of excellence.

£11,720

Duration of installation: 30 Days

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Purchase Includes:

Audison Thesis tweeter

Audison Voce 3’ mid range

Audison Voce Mid Bass

50 sheets of Skinz sound proofing

Custom A-pillars

Audison Prima rear speakers

Hertz mille power 4– Amplifier

Hertz mille power 5– Amplifier

Hertz mille power 4– Amplifier

Signal summing device

Audison Virtuoso Processor

Connection Grade wiring

Hertz Mille legend 10'' sub

Custom Sub Box

Tuning & EQ

Professional pictures

Professional video of the install

Optional Extra:

Optical Module: £649

Warranty:

All of our installs have lifetime warranty on parts and labour

Level 8 package
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Ideal for perfectionists who won't compromise on quality.

£18,750

Duration of installation: 33 Days

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Purchase Includes:

Audison Thesis tweeter

Audison Thesis 3’’ mid-range

Audison Voce Mid Bass

90 sheets of Skinz sound proofing

Custom A-pillars

Audison Prima rear speakers

Audison Voce 4ch Amp

Audison Voce 4ch Amp

Audison Voce 1ch Amp

Audison Voce 1ch Amp

Signal summing device

Audison Virtuoso Processor

Connection Grade wiring

Hertz Mille Legend 10'' sub

Hertz Mille Legend 10'' sub

Custom Sub Box x 2

Tuning & EQ

Professional pictures

Professional video of the install

Optional Extra:

Optical Module: £649

Warranty:

All of our installs have lifetime warranty on parts and labour

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Level 9 package

Designed for those with an unwavering commitment to excellence.

£46,251

Duration of installation: 40 Days

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Purchase Includes:

Audison Thesis Tweeter

Audison Thesis Mid Range

Audison Thesis Mid Bass

100 sheets of Skinz sound proofing

Custom A-pillars

Hertz Mille Legend rear speakers

Audison Voce 5ch Amp

Audison Thesis 4ch Amp

Audison Thesis Venti (The £12k Amp)

Audio Control signal summing device

Audison Virtuoso Processor

Connection Grade wiring

Hertz Mille Legend 10'' sub

Hertz Mille Legend 10'' sub

Custom Sub Box x 2

Tuning & EQ

Professional pictures

Professional video of the install

Optional Extra:

Optical Module: £649

Warranty:

All of our installs have lifetime warranty on parts and labour

Purchase Includes:

3 Audison Thesis Venti (The £12k Amp)

2 Audison Thesis Uno

Audison Thesis Quattro

120 sheets of Skinz sound proofing

Audison Thesis Tweeters

Audison Thesis Mid Range

Audison Thesis Mid Bass

Custom A-pillars

Audison Thesis rear speakers

Audio Control signal summing device

Audison Virtuoso Processor

Connection Grade wiring

Hertz Mille Legend 10'' sub

Hertz Mille Legend 10'' sub

Custom Sub Box x2

Tuning & EQ

Professional pictures

Professional video of the install

Optional Extra:

Optical Module: £649

Warranty:

All of our installs have lifetime warranty on parts and labour

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level 10 package

Ideal for individuals who refuse to accept anything less than perfection.

£124,178

Duration of installation: 60 Days

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Lifetime warranty

All of our installs have lifetime warranty on parts and labour

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Secure facility

Your car is secure in our 11,000 sq.ft. workshop

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Technology

3D printing, CNC machining and RTA tuning to create the best sound

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Hire cars

Keeping you mobile while your car has it’s spa treatment

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Family business

Our amazing team will make sure you’ll get the best experience

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Awesome coffee

We’ll make sure you enjoy the best coffee while we take care of your car

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“Just listening to this audio system in here sounds unreal. To have this upgrade is the ultimate. It’s perfect.”

— Shmee150

What’s the process?

1.

Consultation

Our expert team will guide you on the best solution to upgrade your car audio system

2.

Deposit

Secure deposits via all major card providers, bank transfer or via Crypro Currency

3.

Car arrives

We offer hire cars or vehicle transportation options to make your life easier

4.

Install

The sound wizards make your car sound truly incredible

5.

Tuning

Using the latest technology and our experience we tune the sound to your music taste

6.

Quality control

Our team go through every install with great detail to ensure perfection at all times for you

7.

Car collection

This is where we love seeing our clients smile when they hear a song they love on their new system

8.

Thank you!

All of our clients get a gift from our team to say thank you for supporting our family business

Got questions?

Our car audio experts will guide you and recommend the best options for your car tailored to your needs and budget

Book a free consultation

Harmon Kardon VS Audison

In the world of high-fidelity sound, the names Harman Kardon and Audison often feature prominently. Each brand has a unique history, approach to design, and set of offerings that satisfy different segments of the audio market. This comparison explores key differences and similarities between Harman Kardon and Audison to help you make an informed decision.

In this video we discuss and explain all there is to know about audio upgrades on BMWs, if you are looking to learn more and looking for some help on what system to choose, this video should help you massively.

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Not sure what system to choose?

This video is a great one for those of you who want to learn more about how we choose systems and may help you understand more about your BMW audio upgrade.

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Frequently asked questions

  • This varies depending on the system, the level of fabrication required and the size of the job. For clarity, we list estimated timescales on each of our packages. We believe in doing the job once and doing it properly — not rushing it. A consultation will give you a realistic timeframe for your specific vehicle.

  • Yes. We design all systems in a fully reversible way using quality connectors and 3D-printed adapters. That means when it’s time to change cars, we can remove the system cleanly and re-install it in your new vehicle.

  • Yes. Most of our clients start with a consultation. You can see and hear our demo cars, get a tour of our facility, and we’ll build a system that suits your goals, your vehicle and your budget.

  • We have clients from all over the UK — including London, Birmingham, Manchester and even Scotland. Many travel several hours because they want their installation done once, and done right. We also offer hire cars and can help with transport if required.

  • Yes, we have many clients from Europe, the Middle East and the USA who ship their vehicles to us for audio upgrades. If you’re based internationally, we can help arrange transport and coordinate your installation from start to finish.

  • Sound deadening transforms how a car sounds. By reducing road noise, panel vibration and resonance, it allows the system to deliver clearer sound and better bass. It also makes everyday driving more enjoyable — even when the system’s not turned up.

  • A passive system uses crossovers to split the audio signal after it leaves the amplifier. A fully active system gives each speaker its own amplifier channel, allowing far more control over tuning and sound quality. Active systems deliver more clarity, precision and adjustability — perfect for high-end installations.

  • A DSP (Digital Signal Processor) allows us to precisely time-align, EQ and tune your system for your specific car and seating position. It helps remove peaks, dips and reflections caused by the vehicle’s shape. The result is clean, balanced and incredibly detailed sound.

  • We follow a clear, structured process so the system sounds amazing in your exact car and for your taste in music.

    1. Measure the factory system — we analyse your OEM setup with calibrated microphones and REW (Room EQ Wizard).

    2. Configure the new system — we set gains, crossovers and polarity so everything performs correctly.

    3. Precision DSP tuning — we bring the REW data into our DSP software, time-align each speaker and apply EQ for a balanced sound.

    4. Tune to your music — using your favourite tracks, we fine-tune by ear for tone, staging and detail.

  • No. We use modern, efficient equipment designed with EVs in mind. The systems we install have minimal power draw, so your driving range isn’t affected.

  • We offer a lifetime warranty on all our workmanship. If anything fails due to how it was installed, we’ll put it right.
    All parts are covered by the manufacturer’s warranty, typically between 2 and 5 years. We’ll also help handle any valid claims with the supplier to make the process smooth.

  • Yes. We have multiple demo cars on site so you can experience different levels of audio systems in person. It’s the best way to understand the difference a proper system makes.

  • Transparency is standard here. We document your installation with step-by-step photos and short videos, so you can see exactly what was done and how it was done. We can include serial numbers for key components, wiring and fabrication progress, and snapshots of DSP/REW settings used during tuning. You’ll receive this media as a record of the work — it’s one of the big reasons clients choose us.

  • We’re a large, experienced team working from an 11,000 sq ft purpose-built facility. Every bay has custom racking so parts removed from your vehicle are stored safely. There’s plenty of space around each car, reducing risk and allowing our engineers to work cleanly and efficiently. Support engineers can assist your lead engineer whenever needed, keeping quality high and timelines realistic.

  • • Large, modern 11,000 sq ft facility
    • Experienced team with dedicated engineers per project
    • Clean, organised bays with secure part storage
    • Transparent pricing and realistic timescales
    • Demo cars so you can hear results before you buy
    • Exceptional finish and attention to detail
    • Lifetime workmanship warranty
    • Photo/video documentation of your install

  • Yes, we can install your own equipment such as amplifiers, speakers or subwoofers. All parts need to be inspected at our site before we can confirm a quote. This ensures everything is safe, compatible and installed to our usual high standards.

Customise the look👌

Want it matte black, metallic red or a rainbow colour? Any colour, any finish - we do it all!

audison coloured speakers
colour swatches list
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harman kardon speakers in bmw

The BMW has used a very unique sound setup in their cars for many years. Most people are disappointed to say the least with the sound quality of the standard audio system on BMW’s, comments such as “no bass”, “no detail”,” muddled” and “distorted” are not uncommon.

We have several different solutions available and can offer bespoke systems which we are happy to discuss in person, our most popular upgrades are detailed above.

How to tell what system you have from factory:

BMW Base Sound System: No tweeter location, no grill on top of the door

BMW Hi-Fi Sound System: A tweeter location with a grill on top of the door

BMW Harmon-Kardon Sound System: A tweeter location with a grill on top of the door with the the HK Brand written on the grill

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Transform Your BMW Audio: Unleash the Ultimate Sound Experience!

Blue BMW left wheel

If your BMW has HK, its no problem for us to upgrade at all, in fact, ultimately, although a little more involved, a HK equipped vehicle will produce even better sound quality than a non HK vehicle. If you are looking to upgrade your HK system, we recommend you start with level 4 upward.

BMW design their cars to be the “Ultimate Driving Machine”. Unfortunately, BMW stopped short in the audio department. The audio quality is lousy, the music seems weak, almost lifeless and if you ever try and crank it up, things only go downhill from there!

But wait, there’s good news. We can make your BMW sound amazing! Our team has developed audio upgrade packages that have proven so popular that we do them for BMW clients across the UK.

The BMW audio system has received criticism from some for its speaker quality, which can sometimes sound muffled or distorted, particularly at higher volumes. The audio system is also susceptible to road noise, which can detract from the listening experience. The low-end frequencies often lack the resonance and impact that is expected in a premium audio system, resulting in a flat and uninspiring sound.

BMW G Series is the latest model range, this covers a wide variety of vehicles. If you are looking to upgrade your BMW G Series, feel free to book a consultation so we can advise on the best solution for you. The packages are here to give you an idea of budget plus timescales for work. We also offer bespoke solutions for BMW car audio upgrades.

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