Ethernet Audio Box For BMW

Coaxial transmission lossless new upgradecation is required

Non-destructive upgrade easy to operate

Ethernet input
Original car interface control
Preserve all media tones
Enhanced Audio Quality
Audio decoding
Front and rear audio output


An effortless choice for upgrading BMW audio quality, compatible with all top brands of DSP amplifiers

Installing Pre-amplifier interface box to enhance your driving experience with our premium BMW audio upgrade services.

Elevate your sound system with top-notch BMW amplifier, ensuring a superior audio quality.

Our specialized BMW sound upgrade, featuring advanced DSP amplifiers, takes your in-car audio to a new level. 


BMW 1 Series(2020-2024)
BMW 2 Series(2020-2024)
BMW 3 Series(2019-2024)
BMW 4 Series(2020-2024)
BMW 5 Series(2018-2023)
BMW 6 Series(2018-2023)
BMW 7 Series(2020-2024)
BMW 8 Series(2019-2024)
BMW M2        (2020-2024)

BMW M3(2019-2024)
BMW M4(2020-2024)
BMW M5(2019-2023)
BMW M6(2019-2023)
BMW M8(2019-2024)
BMW X1(2023-2024)
BMW X3(2021-2024)
BMW X4(2019-2024)
BMW X5(2019-2024)

BMW X6 (2019-2024)
BMW X7 (2019-2024)
BMW Z4 (2019-2024)
BMW iX1(2023-2024)
BMW iX3(2020-2024)
BMW iX  (2022-2024)
BMW i4   (2022-2024)
BMW XM(2023-2024)

Preamplifier interface box for BMW is a premium sound treatment solution that converts the Ethernet signal into digital output. It aims to improve sound quality and functionality without the need for extensive modifications or rewiring. It includes two Toslink outputs and two coaxial outputs, delivering a high-bit-rate digital signal directly to your amplifier or DSP via optical or coaxial connections. Compatible with all BMW ID7/ID8 system.

Installation and debugging

     In car audio retrofit, the quality of the sound source is the most important factor. Due to the different high/medium/low configurations of luxury cars, the power amplifier of the head unit on some low and medium configuration cars can’t meet the requirements of audiophiles. The sound source part has been processed by default tuning and power amplification during output, and the output is a high-level sound signal.

 The function of the audio box is to separate the processing commands of the host for audio data, such as volume,

 sound effects, etc., and discard the original car power amplifier. It outputs general-purpose optical fiber/coaxial sound signals in the format required by professional audio equipment, thereby completing the conversion of car-specific network data to professional audio data. In this way, the unprocessed original sound source can be obtained, and at the same time, an external high-quality sound source can be added to match with the retrofit aftermarket power amplifier (with digital DSP function, supporting common optical fiber/coaxial signals), thereby bringing a perfect sound modification effect.

Lossless upgrade better quality

Keep all the functions of the original car: Bluetooth, WIFI, USB, DVD/CD, radio, reversing radar, navigation, favorites, parking reminder and other sounds and functions.

Upgrade your BMW audio system seamlessly with our “Pre-amplifier interface box for BMW .” This innovative interface box serves as the bridge to elevate your in-car audio experience. Pair it with our premium BMW AMPLIFIER for a crystal-clear sound upgrade. 

Play with sound System Modification to unlock more possibilities

All-aluminum casting body Efficient heat dissipation design

CNC (numerical control machine tool) cutting, shell coating hardening treatment, reducing body size, increasing air contact area, can dissipate the heat generated by electronic components in time. Make the decoder maintain a constant temperature inside under each power.

Linear power supply

Immerse a world of superior audio quality with our BMW audio upgrade solutions, featuring the BMW Fiber Optic Box. Upgrade
your BMW's audio system to new heights where the synergy of the BMW Fiber Optic Box and BMW Amplifier creates
an unparalleled auditory sensation.Super stable, strong anti-interference