You Might Like
SKU:EW-BZMO-V721
Couldn't load pickup availability
| Model | Chassis Code | Production Years (MOST25) |
|---|
| C-Class | W203, W204 (early) | 2004–2010 |
| E-Class | W211, early W212 | 2003–2010 |
| S-Class | W220 (facelift), W221 (early) | 2003–2012 |
| CL-Class | C215 (late), C216 (early) | 2003–2012 |
| CLS-Class | W219 | 2004–2010 |
| SL-Class | R230 (facelift) | 2004–2011 |
| SLK-Class | R171 | 2004–2011 |
| ML/GL-Class | W164, X164 | 2005–2012 |
| GLK-Class | X204 (early) | 2009–2012 |
| R-Class | W251 | 2006–2012 |
| G-Class | W463 (with COMAND APS) | 2003–2012 |
Look behind the head unit or at the back of the CD/DVD changer — you’ll see an orange plastic fiber optic cable with a dual plug.
Check if the car’s audio system menu shows Logic 7 surround — often a sign of MOST25.
Match the infotainment generation (NTG2/2.5/early NTG4) with the model year.
| Model | Years (MOST150) | Audio System |
|---|
| A-Class (W176) | 2015–2018 | Harman/Kardon optional |
| B-Class (W246) | 2014–2018 | Premium audio options |
| C-Class (W205) | 2014–2021 | Premium systems |
| CLA (C117) | 2015–2019 | Optional high-end audio |
| CLS (W218) | 2014–2018 | Burmester/HK in higher trims |
|
E-Class (W212/W213,Coupes) |
2014–2020 | Often Burmester or Harman/Kardon |
| G-Class (W463) | 2016+ | High-end audio variants |
| GL/GLA/GLC/GLE | 2014–2020 | Optional premium systems |
| SLC/SL/CL/S-Class | 2014–2021 | Especially in Burmester option trims |
| Vito/V-Class | 2014–2020 | Premium sound packages available |
Generally in Burmester-equipped models from 2020+
In-car Audio Retrofit:
The Core Role of the Sound Source
In the field of in-car audio upgrades, the quality of the sound source is the most critical foundation for achieving high-fidelity performance. Due to the varying trim levels—high, medium, and low—of luxury vehicles, some factory-installed head units in mid- to low-tier configurations fail to meet the stringent requirements of audiophiles. These systems often output high-level audio signals that have already undergone factory tuning and internal amplification, resulting in compromised sound quality.
The audio interface box addresses this issue by isolating the audio data commands from the factory head unit—such as volume control, EQ settings, and other sound effects—and bypassing the built-in OEM amplifier. It converts vehicle-specific network audio signals into standardized optical or coaxial digital outputs that are compatible with professional-grade audio equipment.
By doing so, it restores access to a clean, unprocessed sound source and enables integration with high-performance aftermarket amplifiers equipped with digital DSP functionality. This seamless conversion ensures that audiophiles can enjoy a truly refined listening experience, with significantly enhanced soundstage, clarity, and depth—ultimately achieving a professional-level audio upgrade in their vehicle.
Return conditions:
If the product has any unsolvable technical problems, please email wzxm@ewaygps.com within 2 years(subject to logistics display delivery) after receiving the goods for instructions on how to return product for a full refund or exchange or maintain. Our products support 30 days return, 6 months replacement and free maintenance service within two years.Some products only provide one-year maintenance service, please refer to the product page for details.
Note:For orders over 30 days, we do not provide refund service. But you can replace it.
Return address:
Note:Products should be returned to our specified warehouse. We will not refund you if you send back to another location without permission.So please contact us before preparing to return or replace the product.
Please check the address with us again before returning the package.
Return cost: The cost of returning the product shall be borne by the buyer.
Refund time:
If you need a refund, then we will process the refund for you within 7 working days after receiving your returned(The refund will arrive in your original payment account). Please keep in touch with us.
If you need to replace the product, then we will confirm the address with you after receiving the returned, and send you a brand new product within 2-3 working days, you do not need to bear any other costs.
Other charges：There are no ohter charges
The countries we can currently send to include the United States, the European Union, Russia, Singapore, Australia, New Zealand, Japan, and South Korea. Customers in other countries please consult online customer service.
Shipping cost: We offer FREE international shipping as standard
Tax: No Tax / No VAT
Order processing time: 1-2 working days
Shipping time:
| Shipping country list |
Delivery Time
|
|
| EU countries |
Austria, Belgium, Bulgaria, Czech，Cyprus, |
NO TAX / NO VAT 2-7 days |
| North America | United States,Canada |
NO TAX / NO VAT 2-7 days |
| Europe，Oceania | Russia, Australia，new Zealand |
NO TAX / NO VAT 10-20 days |
| Asia | Japan, South Korea, Singapore |
NO TAX / NO VAT 7-10 days |
Shipping Partners
We currently maintain cooperative relationships with 4PX, DHL, CNE and UPS. Our commitment to our customers is to assure the delivery reaches its destination in the quickest manner with the lowest cost.
Shipp Details
After the package is sent, you will receive an email with shipping information.
At the same time, we will also provide you with a Logistics tracking number through paypal.
Of course, you can also enter the logistics tracking number to query logistics information through the logistics website:
DHL:https://www.dhl.de/en/privatkunden.html
CNE:https://www.cne.com/English
UPS:https://www.ups.com
We do our best to ensure that the goods arrive the customers safely.
If you find any omissions or damages during the receipt, please keep the outer packaging in time and contact us via email (wzxm@ewaygps.com) or messenger and provide us with evidence.
If the logistics information shows the receipt, but you did not get your product, please contact your local logistics service provider (local post) in time. And provide us with the corresponding evidence, and we will make an inquiry for you.
All claims for loss, damage or delay must be filed within twenty (20) days following the date of delivery or the date on which delivery should have occurred .
Under normal circumstances, we will provide you with a solution within 60 days.
Taxes and Duties
If you choose to send from China, the seller will be responsible for paying taxes. When the goods are delivered to you, you do not need to pay any customs duties.
If you choose to send from Germany,once the parcel reaches its destination country that your order may be subject to customs or import duties that are charged .
According to laws and regulations, these fees need to be paid by the recipient, and we cannot control the specific amount, as customs policies and import duties vary widely from country to country.Customs duty is charged as a percentage of the total value of the goods. The specific ratio will vary according to the policy of the country being sent, but on average is between 3% and 9%.
We generally try to reduce the declared value of the package to reduce taxes and fees, but you may still need to pay a small amount of customs fees.The proportion of this situation is about 1%, so you don't need to worry about it.
If you have other questions, please be sure to contact us：wzxm@ewaygps.com
