{"title":"GM Preamps","description":"\u003cp\u003eNetwork preamps are essential for getting great sound from the GM infotainment system. GM has used various network technologies for infotainment. Earliest models used MOST 50, and are compatible with the M650-GM preamp. Then GM switched to Ethernet - these vehicles are covered by the Zen AVB preamp. Starting in 2025, GM started using A2B in their large SUVs, and these are covered by the Zen A2B+ preamp. (For specific coverage information, always check the Compatibility tab on the individual product page before ordering.)\u003c\/p\u003e\n\u003cp\u003eFor more on network preamps, see our \u003ca href=\"https:\/\/www.zenaudio.com\/pages\/zen-audio-articles\" title=\"Tech Articles\" rel=\"noopener\" target=\"_blank\"\u003eTech Articles\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"zen-a2b-plus-ford-gm-a2b-audio-interface","title":"Zen A2B+ | Network Preamp for Ford\/GM","description":"\u003ch2\u003eAward-winning sound from your Ford or GM vehicle's A2B 1.0 infotainment network!\u003c\/h2\u003e\n\u003cp\u003eThe Zen A2B+ is a network preamp for vehicles using A2B 1.0 network technology - it's compatible with 2018-2024 Ford \u0026amp; 2025+ GM vehicles using the A²B® (Automotive Audio Bus). \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e(For 2025+ Fords using A2B 1.1, please use the Zen F25 network preamp. For application information, see \"Vehicle Compatibility\" below)\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe Zen A2B+ delivers six channels of pure unprocessed analog audio (front left\/right, rear left\/right, subwoofer), or two stereo channels of SPDIF digital audio (available over TOSLINK fiber-optic). The Zen A2B+ uses the same digital processing as the competition-proven M650-GM.\u003c\/p\u003e\n\u003cp\u003eIn Ford B\u0026amp;O applications, the A2B+ can process the speaker outputs of the factory ACM with the built in Zen DSP\u003cstrong\u003e \u003c\/strong\u003e. This allows simpler high-channel-count systems. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAudiophile components and D\/A converters\u003c\/li\u003e\n\u003cli\u003eClean, clear audio signals - without OEM processing\u003c\/li\u003e\n\u003cli\u003eElimination of Automatic Noise Cancelling feedback\u003c\/li\u003e\n\u003cli\u003eDeletion of \"fake exhaust\" signal injection\u003c\/li\u003e\n\u003cli\u003eGreat phone-call sound \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cem\u003eNOTE: With the Zen A2B+, the factory amplifier will need to be removed from the infotainment system.\u003c\/em\u003e\u003cstrong\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Zen Audio","offers":[{"title":"Default Title","offer_id":47028118880441,"sku":"NTV-KIT1033","price":690.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/5029\/0105\/files\/a2b_plus_1ac78471-0fcf-43e7-b32e-3401559c654b.png?v=1777028707"},{"product_id":"zen-avb-gm-1","title":"Zen AVB-GM | Ethernet Network Preamp","description":"\u003ch2\u003eAward-winning sound from your GM vehicle's Ethernet infotainment network!\u003c\/h2\u003e\n\u003cp\u003eThe Zen AVB-GM is a network preamp for GM vehicles using automotive Ethernet networking. (For application information, see \"Vehicle Compatibility\" below). The Zen AVB makes your vehicle's OEM infotainment system sound like a high-end audiophile head unit!\u003c\/p\u003e\n\u003cp\u003eThe Zen AVB delivers six channels of pure unprocessed analog audio (front left\/right, rear left\/right, subwoofer), or two stereo channels of SPDIF digital audio (available over TOSLINK fiber-optic). The Zen AVB uses the same digital processing as the competition-proven M650-GM.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAudiophile components and D\/A converters\u003c\/li\u003e\n\u003cli\u003eClean, clear audio signals - without OEM processing\u003c\/li\u003e\n\u003cli\u003eElimination of Automatic Noise Cancelling feedback (if present)\u003c\/li\u003e\n\u003cli\u003eDeletion of \"fake exhaust\" signal injection (if present)\u003c\/li\u003e\n\u003cli\u003eGreat phone-call sound \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cem\u003eNOTE: With the Zen AVB, the factory amplifier will need to be removed from the infotainment system.\u003c\/em\u003e\u003c\/p\u003e","brand":"Zen Audio","offers":[{"title":"Default Title","offer_id":47028343865529,"sku":null,"price":700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/5029\/0105\/files\/AVB_MAIN_2_R_80909f2b-7543-4e3a-888e-3eb9f277b5e5.png?v=1777029869"},{"product_id":"zen-650-gm","title":"Zen M650-GM | MOST 50 Network Preamp","description":"\u003ch2\u003eAward-winning sound from your GM vehicle's infotainment network!\u003c\/h2\u003e\n\u003cp\u003eThe Zen M650-GM is a network preamp for GM vehicles using the MOST 50 network technology. (For application information, see \"Vehicle Compatability\" below)l\u003c\/p\u003e\n\u003cp\u003ethe M650-GM delivers six channels of pure unprocessed analog audio (front left\/right, rear left\/right, subwoofer), or two stereo channels of SPDIF digital audio (available over either TOSLINK fiber-optic or coaxial). Get the same signal that won a sound-quality world championship! \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAudiophile components and D\/A converters\u003c\/li\u003e\n\u003cli\u003eClean, clear audio signals - without Bose processing\u003c\/li\u003e\n\u003cli\u003eElimination of Automatic Noise Cancelling feedback\u003c\/li\u003e\n\u003cli\u003eDeletion of \"fake exhaust\" signal injection\u003c\/li\u003e\n\u003cli\u003eGreat phone-call sound \u003c\/li\u003e\n\u003cli\u003ePlug-and-play interface harness included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Zen Audio","offers":[{"title":"Default Title","offer_id":47105267630265,"sku":null,"price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/5029\/0105\/files\/m650_kitr2.jpg?v=1777030270"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/5029\/0105\/collections\/m650_kitr2.jpg?v=1784897252","url":"https:\/\/www.zenaudio.com\/collections\/gm-pre-amps.oembed","provider":"Zen Audio","version":"1.0","type":"link"}