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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

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CT53-PO01
Product Information
Product Information
Active System Adapter.
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
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About Active System Adaptor

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       

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