{"product_id":"stetsom-bravo-hq-400-4-multichannel-car-audio-digital-amplifier-2-ohms-stable-4-channel","title":"Stetsom Bravo HQ 400.4 Multichannel Car Audio Digital Amplifier - 2 Ohms Stable 4 Channel","description":"\u003cdiv\u003e\n\u003cp\u003eThe Stetsom Bravo HQ400.4 is a 4-channel, 2 Ω-stable digital car amplifier delivering 400 W RMS total, built for enthusiasts who want flexible multi-channel power with bridged capability in a compact chassis.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eNumber of Channels\u003c\/b\u003e: 4 — Provides four outputs for a full front\/rear speaker setup and keeps options open for independent channels or pairing two outputs in bridge mode for higher power into a single load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRMS Power\u003c\/b\u003e: 400 W total — Indicates continuous, real-world output ability across all channels when operated within its stated specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRMS Power at 4 Ohm (14.4V)\u003c\/b\u003e: 4 x 60 W RMS — Each channel can deliver up to 60 W into a 4 Ω load with a 14.4 V supply, useful for standard full-range speaker pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRMS Power at 2 Ohm (14.4V)\u003c\/b\u003e: 4 x 105 W RMS — Higher current capability allows better performance with lower-impedance loads, increasing headroom for demanding speakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRMS Power at 4 Ohm (12.6V)\u003c\/b\u003e: 4 x 50 W RMS — At lower vehicle voltage, power per channel is reduced in 4 Ω loads, affecting perceived loudness but preserving thermal stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRMS Power at 2 Ohm (12.6V)\u003c\/b\u003e: 4 x 85 W RMS — Maintains higher output into 2 Ω loads even at lower nominal voltage, aiding bass and dynamic response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBridge Power (4 Ohms)\u003c\/b\u003e: 2 x 150 W RMS (12.6V) \/ 2 x 180 W RMS (14.4V) — Bridge mode combines two channels for greater single-load power, ideal for a sub or high-power pair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSupply Voltage\u003c\/b\u003e: 9 V ~ 15.5 V DC — Accepts a broad vehicle electrical range, maintaining performance across different alternator and battery conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFrequency Response\u003c\/b\u003e: 5 Hz ~ 30 kHz — Wide bandwidth supports deep bass, clear mids, and crisp highs for a full-range output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCrossover (Low Pass \/ High Pass)\u003c\/b\u003e: 50 Hz ~ 2.3 kHz (Variable) for both — Independent, adjustable filtering to shape the amp’s output and minimize overlap between channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSignal to Noise\u003c\/b\u003e: \u0026gt; 90 dB — Low noise floor helps preserve detail and reduces hiss in the signal path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInput Sensitivity\u003c\/b\u003e: RCA 200 mV ~ 8.0 V \/ HIGH 1.5 V — Flexible input level options to accommodate both line-level sources and factory\/high-level signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInput Impedance\u003c\/b\u003e: RCA 15 kΩ \/ HIGH 1 kΩ — Distinct input impedances support compatibility with varying source devices and wiring schemes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImpedance Output\u003c\/b\u003e: 2 Ω (Stereo) — Stable into 2 Ω loads, providing solid power delivery to low-impedance speakers in stereo configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePower Consumption (with signal)\u003c\/b\u003e: Music 17 A \/ Bass 34 A — Indicates current draw under typical listening and bass-heavy conditions, relevant for electrical system planning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDimensions\u003c\/b\u003e: 58.5 × 127 × 167 mm — Compact footprint suitable for tight installation spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight\u003c\/b\u003e: 640 g — Lightweight chassis aids handling and installation flexibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a real build, HQ400.4 supports a four-channel front\/rear setup with the option to bridge two channels for higher power into a single load. Its 2 Ω stability and generous current capabilities empower engaging bass and clear multi‑channel performance, while the adjustable crossovers and broad input compatibility help tailor the sound to any vehicle environment. The combination of wide frequency response, solid SNR, and compact dimensions makes it a versatile choice for premium installations seeking flexible channel distribution without compromising space or reliability.\u003c\/p\u003e \u003cbr\u003e \u003ctable class=\"table\" data-mce-fragment=\"1\"\u003e\n\u003cthead data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"text-uppercase\" data-mce-fragment=\"1\"\u003eCHARACTERISTICS\u003c\/th\u003e\n\u003cth data-mce-fragment=\"1\"\u003eBRAVO HQ400.4 – 2 OHMS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRMS Power\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRMS Power at 4 Ohm\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e2 x 180W RMS @ 14.4V (BRIDGE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRMS Power at 2 Ohm 12.6V\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e4 x 85W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRMS Power at 4 Ohm 12.6V\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e4 x 50W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRMS Power at 2 Ohm 14.4V\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e4 x 105W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRMS Power at 4 Ohm 14.4V\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e4 x 60W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003ePower @ 12.6V Bridge 4 Ohms\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e2 x 150W RMS (BRIDGE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e9V ~15,5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e5Hz ~30KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eCrossover Low Pass\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e50Hz ~ 2,3KHz (Variable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eCrossover High Pass\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e50Hz ~ 2,3KHz (Variable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eSignal to Noise\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u0026gt;90dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eHarmonic Distortion\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u0026lt;1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRCA: 200mV ~ 8,0V \/ HIGH: 1,5V (FIO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eInput Impedance\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRCA: 15K Ohms \/ HIGH: 1K Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eImpedance Output\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e2 OHMS (STEREO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eConsumption with Signal Musical\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e17A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eConsumption with Signal Bass\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e34A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eDimensions (H x W x D) mm\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e58,5 x 127 x 167 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eWeight Kg\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e640g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Stetsom","offers":[{"title":"Default Title","offer_id":49850247250148,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/stetsom.com.br-ptbravo-hq400-4-2-ohms-exclusivo-exportacaoenbravo-hq400-4-2-ohmsesbravo-hq400-4-2-ohms-hq400-4-topo-2ohms.webp?v=1789261834","url":"https:\/\/www.12voltoutlet.com\/products\/stetsom-bravo-hq-400-4-multichannel-car-audio-digital-amplifier-2-ohms-stable-4-channel","provider":"12 Volt Outlet","version":"1.0","type":"link"}