The #1 Android In-car GPS Multimedia System

BMW MOST Fiber Optic Amp Interface for E90, E91, E92, E93, E60, E61, E81, E82, E83, E84, E70, E87, E88



Availability: In stock


* Required Fields

  • BMW

    FREE Shipping on orders over $299 to: USA, Australia, France, UK, Canada, Romania, Norway, Netherlands, Switzerland, Germany, Austria, Portugal, Greece, Belgium, Ireland, Italy, Denmark, Ukraine, Sweden, Spain, South Korea, Mexico, Finland, Philippines

    Low Flat Rate Express International Shipping

    Chat with us LIVE now for more info about our products.

    1 Year International Warranty



    The MOST-BMW supports any aftermarket radio and the following BMW models: E90, E91, E92, E93, E60, E61, E81, E82, E83, E84, E70, E87, E88,


    BMW E90 3-series sedan, (2006 - 2011)
    325i, xi
    328i, xi
    330i, xi
    335i, xi,

    BMW E91 3-series wagon (2006 - 2011)

    BMW E92 3-series coupe (2007 - 2011)
    328i, xi
    335i, xi

    BMW E93 3-series convertible

    BMW E60 5-series sedan (2004 - 2010)
    525i, xi
    530i, xi
    545i, xi
    550i, xi

    BMW E61 5-series wagon (2004 - 2010)
    530i, xi

    BMW E82 1-series coupe (2008 - 2012)

    BMW E83 X3 SAV (2004 - 2010)

    BMW E84 X1

    BMW E70 X5 SAV (2006 - 2012)

    BMW E87 1-series convertible (2008 - 2011)


    Supports both Logic 7 and Harmon Kardon

    The AVIN MOST-BMW Fiber Optic Amp Interface allows the BMW factory amplifier, the output from all speakers including subwoofer, and premium sound quality to be retained when installing ANY aftermarket radio.  This makes for a nice clean easy install. 

    When installing the MOST-BMW into your BMW you must make sure that the fiber optic signal loop is not broken.  If you have other devices which can include original CD Changer, satellite radio, and telephone module they must stay connected so the fiber optic signal loop is consistent.  If you would like to remove  the CD changer, satellite radio or telephone module you can but you will need our MOST Fiber Optic Bypass Loop Adapter Plug OR MOST Fiber Optic 5 Meters Cable our to make a direct connection from the MOST interface to the factory M.O.S.T. (Media Oriented Systems Transport) amplifier.

    To identify if you have a factory-amplified audio system, you can check the vehicle in a number of ways. Some vehicles will have clear markings on the speaker grills indicating the presence of an upgraded audio system. You can also check with the original order notes/invoice from when the car was purchased from the factory, the upgraded sound system with an amplifier would show on the options list. If unsure, you can call your local dealer with your vehicles chassis number and ask them to check if the vehicle was manufactured with an amplified audio system.




    Frequently asked questions:

    Q.  Can I return this for a refund if I do not like it?

    A:  NO.  We warranty the product for one year.  If there are any problems with it, we will replace it with a new one for you.

    Q.  Why are there only TWO RCA inputs? 

    A:  It only supports Stereo input from your front Left and front Right RCA audio output.

    Q.   If it is only using TWO RCA audio cable how will get sound from all of my speakers?

    A:  The MOST interface will convert the TWO RCA audio signal into a fiber optic signal your factory amplifier can understand.  Your Harmon Kardon amplifier will distribute sound to all of your speakers including your subwoofer.

    Q.  Can I control fade and balance after this is installed?

    A:  You can control only LEFT RIGHT balance since it is only using those two RCA audio cables.  No fading from front to back.

    Q.  Does this support steering wheel button controls?

    A:  This does not add or remove steering wheel button control.  It only has one function and that is to convert RCA audio into a fiber optic signal the factory amplifier can understand.






     DIY Install Video

    You may also be interested in the following product(s)