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PAC APSUB-GM61 AmpPRO advanced subwoofer amplifier integration interface for select GM with MOST50 audio systemAdd a subwoofer. Upgrade your sound and keep your GM factory radio
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PAC APSUB-CH41 AmpPRO advanced subwoofer amplifier integration interface -- premium sound only includes ANC bypassAdd a subwoofer. Upgrade your sound and keep your 2013 to 2020 Chrysler, Ram, Jeep, or Dodge (with premium amplified sound system) factory radio