PAC APSUB-GM61 AmpPRO advanced subwoofer amplifier integration interface for select GM with MOST50 audio system

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Add a subwoofer. Upgrade your sound and keep your GM factory radio
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Integration with today’s advanced vehicle systems like databus-controlled amplifiers can be difficult, if not impossible. AmpPRO SUB products seamlessly integrate with the databus allowing for full control and optimum sound from a factory radio when adding aftermarket amplifiers.


  • Upgrade solution for factory, fixed level, data-bus controlled sound systems 
  • Time-saving design prevents the need for audio correction devices
  • Retains OnStar, Bluetooth, navigation, safety systems, and all warning chimes
  • Subwoofer preamp output (5 volt RMS)
  • Provides flat-low frequency audio output
  • Customized OE bass center frequency selection
  • Plug-n-play installation
  • Remote sub level controller included


  • Amplifier Installation Adapter
  • Vehicle Specific Harness
  • ANC Bypass Harness
  • Flush Mount Sub Level Controller