do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Not Compatible With Fibre Optic Amplifiers.
Fits:
Porsche 911 (996) 1997-2004 Mini ISO
Porsche 986 Boxster 1997-2004 Mini ISO
Active System Adapter to retain factory Amplifiers below
1997-2001 Nokia / Harman Amplifiers (Option 490)
1997-2000 Nokia DSP(Option 680)
2001 Harman DSP(Option 680)
Features & Benefits:
• Plug and play, no cutting of wires required
• Allows the installation of an aftermarket head unit into a vehicle with an OEM amplifier
• Converts New head unit speaker level (Without RCA Audio Out Connectors) to line level for Amplifier
• Please check the connections in the vehicle match the harness you are purchasing
Porsche Active System Adaptors - Retain Factory Audio with Aftermarket Upgrades
Porsche active system adaptors are essential interface components that allow aftermarket head units to work correctly with factory-fitted active sound systems, amplifiers, and premium audio setups. These adaptors convert audio signals and manage output levels, ensuring compatibility between modern multimedia units and Porsche’s original active speaker and amplifier architecture.
Available from Design911, active system adaptors are engineered to preserve factory audio performance while enabling clean, reversible infotainment upgrades.
What Do Porsche Active System Adaptors Do?
Active system adaptors manage signal compatibility between factory audio systems and aftermarket equipment.
Core Functions:
- Convert audio signals for factory active amplifiers
- Retain OEM speakers and sound system performance
- Balance signal levels to prevent distortion
- Enable plug-and-play aftermarket head unit installation
- Preserve factory wiring and system integrity
Without an active system adaptor, aftermarket head units may not function correctly with factory amplifiers.
Why Do Active System Adaptors Fail?
Active system adaptors contain electronics that can degrade over time or be damaged during installation.
Common Causes of Failure:
- Incorrect installation or wiring errors
- Internal electronic component degradation
- Heat exposure behind dashboards
- Poor-quality connections or damaged pins
- Incompatibility with newer head units
Failure can result in no sound, distorted audio, or loss of specific speaker channels.
When Should an Active System Adaptor Be Replaced?
Porsche active system adaptors should be replaced when:
- Audio output becomes distorted or intermittent
- Factory amplifiers no longer receive signal
- Upgrading or changing the head unit
- Diagnosing sound loss after multimedia installation
- Reverting or refreshing aftermarket audio setups
Replacing a faulty adaptor restores proper audio functionality and protects factory components.
Highlights
- Essential Porsche audio integration components
- Retains factory active amplifiers and speakers
- Enables clean aftermarket head unit upgrades
- Protects OEM wiring and system performance
- Designed for reliable signal conversion
