Car Audio Upgrades In Reading, Berkshire
Expert Car Audio Installations
Whether you’re upgrading factory speakers, adding a subwoofer for richer bass, or building a full high-performance system, we use only the finest components from trusted brands like Audison, Hertz, Eton, and Zenec.
Every installation is carefully planned and executed by our experienced technicians to ensure optimal performance, clarity, and reliability. We take the time to understand your listening preferences and vehicle acoustics, creating a system that’s perfectly balanced — powerful yet refined. From subtle enhancements to complete audio transformations, our goal is simple: to make every journey sound incredible.
Trusted by clients across the UK
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Ultimate Honda Civic Type R Sound Upgrade!
This Honda Civic Type R underwent a complete audio transformation with premium Audison components. We installed Voce speakers, a Forza DSP amplifier, and added comprehensive door soundproofing for improved acoustics — plus a Forza monoblock amp ready for a future subwoofer upgrade. The result is sharper detail, punchier mid-bass, and crystal-clear highs, delivering a huge boost in sound quality and driving enjoyment.
Land Rover Defender L663 Audio Upgrade
In this project, we upgraded a Commercial Defender by replacing the factory Meridian system with premium components from Audison, Rainbow, and JL Audio. The result was a dramatic improvement in clarity, power, and deep bass, thanks to a hidden JL Audio subwoofer and precise tuning. Installed in a stealth, space-efficient way, the system looks factory-fitted — with only a discreet bass controller visible, just as the customer wanted.
Frequently Asked Questions
What does a car audio upgrade include?
An audio upgrade can include new speakers, amplifiers, subwoofers, soundproofing, or a full system upgrade, all tailored to improve clarity, bass, and overall sound quality.
Will an audio upgrade make a noticeable difference?
Yes. Even a basic upgrade can deliver clearer vocals, deeper bass, higher volume without distortion, and a much more balanced sound compared to factory systems.
Can my car still look factory?
Absolutely. We specialise in OEM+ installations, meaning all upgrades are discreet, neatly hidden, and designed to look factory-fitted.
Will I lose any factory features?
How long does an audio upgrade take?
This can vary massively depending on the specification on the system, it could be from 1 day to multiple weeks.
Your Car Upgrade Specialist Since 1977
Founded in Reading in 1977, John Kleis Audio has been a trusted name in in-car entertainment for nearly five decades. From the early days of cassette players to today’s cutting-edge digital upgrades, the company has built its reputation on quality, reliability, and expert installation.
Still family-run and based on Basingstoke Road, John Kleis Audio continues to lead the way in premium audio, vehicle security, and custom car technology — delivering precision, innovation, and service you can trust.
Decades of Expertise
With over 45 years in the industry, we’ve set the standard for in-car entertainment and vehicle technology since 1977.
Quality You Can Trust
We’re known for precision installations, reliable products, and exceptional customer service that’s earned us a loyal following across the Thames Valley.
Innovation & Training
Our team stays ahead of the curve, constantly updating skills and equipment to bring you the latest in-car audio, tech, and security solutions.
Award-Winning Service
As a FOUR MASTERS authorised dealer and ICE Award winner, we deliver professional results backed by proven recognition in our field.