{"product_id":"jensen-690-watts-class-d-mono-amp-with-bluetooth-app-control-ja1b","title":"Jensen 690 Watts Class D Mono Amp with Bluetooth App Control – JA1B","description":"\u003cp style=\"margin: 1em 0;\"\u003eThe Jensen JA1B Class D mono amplifier delivers high-efficiency car audio performance with up to 690 Watts of maximum dynamic power. Engineered with a compact micro-circuitry footprint, it easily fits into tight spaces while providing robust continuous and dynamic output for your vehicle's sound system.\u003c\/p\u003e\n\u003cp style=\"margin: 1em 0;\"\u003eEquipped with integrated Bluetooth connectivity, this amplifier lets you customize audio settings, EQ adjustments, gain, and custom RGB illumination directly from your Apple or Android smartphone. High-level and low-level inputs combined with a variable low-pass crossover ensure seamless setup and precise sound tuning.\u003c\/p\u003e\n\u003ch3 style=\"margin: 1.25em 0 0.5em;\"\u003eKey Features\u003c\/h3\u003e\n\u003ctable class=\"pu-table\" style=\"width: 100%; border-collapse: separate; border-spacing: 0; border: 0; box-shadow: none; outline: none; background: none; table-layout: fixed; margin: 0 0 1em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eJensen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eJA1B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eAmplifier Class\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eClass D Digital\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eSpeaker Outputs\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eMono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eTotal Dynamic Power\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e690 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eContinuous Power Output (RMS)\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e595W x 1 Channel @ 1 ohm, 470W x 1 Channel @ 2 ohm, 290W x 1 Channel @ 4 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eAudio Inputs\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eHigh Level (Speaker Wire), Low Level (RCA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eAudio Outputs\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eRCA Pass Through\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e20 Hz – 300 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eSignal to Noise Ratio\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e68 dBA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eCrossover\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eAdjustable low-pass crossover (32 Hz – 320 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eBass Boost\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eAdjustable at 45 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eGain Adjustment\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eVariable 200 mV – 6 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eApp Control\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eYes (Bluetooth for iOS \u0026amp; Android)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eIllumination\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eRGB Custom Color\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003ePWM MOSFET\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eFuse Rating\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e25A x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eRecommended Power\/Ground Wire\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e4 – 8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eRecommended Speaker Wire\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e12 – 16 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eCTA-2006-D Certification\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eCertified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e5.5 cm x 24.3 cm x 14.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0.75em 0.4em 0; opacity: 0.65; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"border: 0; padding: 0.4em 0; vertical-align: top;\"\u003e1.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 1.25em 0 0.5em;\"\u003eHighlights\u003c\/h3\u003e\n\u003cul style=\"margin: 1em 0;\"\u003e\n\u003cli\u003eJensen AMP App (Apple®\/Android™)\u003c\/li\u003e\n\u003cli\u003eRGB Custom Color Illumination\u003c\/li\u003e\n\u003cli\u003eClass D Design\u003c\/li\u003e\n\u003cli\u003eHigh Level (Speaker Wire) Input\u003c\/li\u003e\n\u003cli\u003eLow Level (RCA) Inputs\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.16″ X 9.56″ X 5.59″ (HXWXD)\u003c\/li\u003e\n\u003cli\u003eAdjustable Bass Boost At 45 HZ\u003c\/li\u003e\n\u003cli\u003eCTA-2006-D Certified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin: 1.25em 0 0.5em;\"\u003eVideos\u003c\/h3\u003e\n\u003ctable class=\"pu-table\" style=\"width: 100%; border-collapse: separate; border-spacing: 0; border: 0; box-shadow: none; outline: none; background: none; table-layout: fixed; margin: 0 0 0.75em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/Bnnq5BAisco\" title=\"Youtube video\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 560px; aspect-ratio: 16\/9; border: 0; border-radius: 8px;\"\u003e\u003c\/iframe\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin: 1.25em 0 0.5em;\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp style=\"margin: 1em 0;\"\u003eCompatible with car audio systems supporting high-level speaker wire or low-level RCA inputs. App control requires a compatible Apple iOS or Android smartphone with Bluetooth.\u003c\/p\u003e\n\u003ch3 style=\"margin: 1.25em 0 0.5em;\"\u003eWarranty\u003c\/h3\u003e\n\u003cp style=\"margin: 1em 0;\"\u003e4-year limited warranty when registered within 60 days of purchase.\u003c\/p\u003e\n\u003ch3 style=\"margin: 1.25em 0 0.5em;\"\u003eDownloads\u003c\/h3\u003e\n\u003cul style=\"margin: 1em 0;\"\u003e\n\u003cli style=\"margin: 0 0 0.35em;\"\u003e\u003ca href=\"https:\/\/jensenmobile.com\/wp-content\/uploads\/2026\/04\/JA1B-JA2B-JA4B-OM-042126.pdf\" rel=\"noopener nofollow\" target=\"_blank\"\u003eOwner \/ User Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin: 0 0 0.35em;\"\u003e\u003ca href=\"https:\/\/jensenmobile.com\/wp-content\/uploads\/2026\/04\/JA1B-JA2B-JA4B-SP-042126.pdf\" rel=\"noopener nofollow\" target=\"_blank\"\u003eOwner \/ User Manual (Spanish)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"pu-table\" style=\"width: 100%; border-collapse: separate; border-spacing: 0; border: 0; box-shadow: none; outline: none; background: none; table-layout: fixed; margin: 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0;\"\u003e\n\u003ch3 style=\"margin: 1.25em 0 0.5em;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003ctable class=\"pu-table\" style=\"width: 100%; border-collapse: separate; border-spacing: 0; border: 0; box-shadow: none; outline: none; background: none; table-layout: fixed; margin: 0 0 1em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e\n\u003cdetails class=\"pu-faq\" style=\"padding: 0.45em 0;\" open=\"\"\u003e\n\u003csummary style=\"cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 10px; list-style: none;\"\u003e\u003cstrong\u003eHow do I control the amplifier settings?\u003c\/strong\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"18\" height=\"18\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.75\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"pu-faq-c\" style=\"width: 1em; height: 1em; flex: none; opacity: 0.6; transition: transform 0.15s;\"\u003e\u003cpath d=\"M6 9l6 6l6 -6\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cp style=\"margin: 0.4em 0 0;\"\u003eSettings such as volume, gain, frequency, bass boost, and RGB illumination can be adjusted directly from a smartphone using the Jensen AMP App for Apple and Android devices.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e\n\u003cdetails class=\"pu-faq\" style=\"padding: 0.45em 0;\"\u003e\n\u003csummary style=\"cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 10px; list-style: none;\"\u003e\u003cstrong\u003eWhat power connections and wiring sizes are recommended?\u003c\/strong\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"18\" height=\"18\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.75\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"pu-faq-c\" style=\"width: 1em; height: 1em; flex: none; opacity: 0.6; transition: transform 0.15s;\"\u003e\u003cpath d=\"M6 9l6 6l6 -6\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cp style=\"margin: 0.4em 0 0;\"\u003eThe amplifier supports 4 to 8 AWG power and ground wiring terminals and 12 to 16 AWG speaker terminals.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0; border-bottom: 1px solid color-mix(in srgb,currentColor 12%,transparent);\"\u003e\n\u003cdetails class=\"pu-faq\" style=\"padding: 0.45em 0;\"\u003e\n\u003csummary style=\"cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 10px; list-style: none;\"\u003e\u003cstrong\u003eWhat audio inputs are available on this amplifier?\u003c\/strong\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"18\" height=\"18\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.75\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"pu-faq-c\" style=\"width: 1em; height: 1em; flex: none; opacity: 0.6; transition: transform 0.15s;\"\u003e\u003cpath d=\"M6 9l6 6l6 -6\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cp style=\"margin: 0.4em 0 0;\"\u003eIt includes both high-level speaker wire inputs and low-level RCA inputs, along with RCA pass-through outputs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 0; padding: 0;\"\u003e\n\u003cdetails class=\"pu-faq\" style=\"padding: 0.45em 0;\"\u003e\n\u003csummary style=\"cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 10px; list-style: none;\"\u003e\u003cstrong\u003eWhat is the maximum power output rating?\u003c\/strong\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"18\" height=\"18\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.75\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"pu-faq-c\" style=\"width: 1em; height: 1em; flex: none; opacity: 0.6; transition: transform 0.15s;\"\u003e\u003cpath d=\"M6 9l6 6l6 -6\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cp style=\"margin: 0.4em 0 0;\"\u003eThe amplifier delivers a maximum dynamic power of up to 690 Watts at 1 ohm, 565 Watts at 2 ohms, and 325 Watts at 4 ohms.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Jensen","offers":[{"title":"Default Title","offer_id":43686349045827,"sku":"JA1B","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/9575\/7123\/files\/JA1B.jpg?v=1787081023","url":"https:\/\/www.trinitycaraudio.com\/products\/jensen-690-watts-class-d-mono-amp-with-bluetooth-app-control-ja1b","provider":"Trinity Car Audio","version":"1.0","type":"link"}