NOTE: Image shown may not reflect actual product shipped. BSW sells DSP adapters from multiple manufacturers depending on availability, pricing, and market conditions. All are backed by a 1 year warranty through BSW and perform and function exactly the same.

DSP was an audio option available on 5 Series, X5, X3, Z4, or 7 Series BMWs between 1996 and 2008. If you have a 3 Series or M3, you DO NOT have DSP. Some (but not all) vehicles equipped with DSP may require a special "DSP adapter" to install certain aftermarket accessories. Read on.

Does my 5 Series, X5, X3, Z4, or 7 Series have DSP?

• 5 Series, X5, 7 Series - Vehicles without navigation will have a button clearly marked "DSP". If your car has navigation, there will be a "DSP" function in the main menu settings.
• X3, Z4 - As you scroll through your audio functions (bass, treble, etc), there will be an option that states either "DSP", "Concert", "Hall", "Jazz" or something along those lines.
• If you do not have DSP, you DO NOT need the DSP Adapter.

If I do have DSP, how do I know whether or not I need the additional DSP adapter?

• If you have a '99-'01 7 Series, you most definitely need the additional DSP adapter.
• If you have a '97-'01 5 Series, you most definitely need the additional DSP adapter.
• If you have a '02-'03 5 Series, you MAY need the DSP adapter (see below)
• If you have a '00-'01 X5, you most definitely need the additional DSP adapter.
• If you have a '02-'06 X5, you MAY need the DSP adapter (see below)
• If you have a 2003 Z4, you most definitely need the additional DSP adapter.
• If you have a '04-'09 Z4, you MAY need the DSP adapter (see below)
• If you have a '03-'09 X3, it is highly unlikely that you will need the additional DSP adapter.