{"product_id":"soundqubed-s1-850-1-s-series-monoblock-amplifier","title":"SoundQubed S1-850.1 S Series Monoblock Amplifier","description":"\u003ch2\u003e\n\u003cstrong\u003eSoundQubed S1-850.1\u003c\/strong\u003e — 900W Mono Amplifier | S-Series | Class D | 1 Ohm Stable\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSoundQubed S1-850.1\u003c\/strong\u003e is a compact, heavy-duty Class D monoblock amplifier delivering \u003cstrong\u003e900W RMS at 1 ohm (14.4V)\u003c\/strong\u003e — and pushing over \u003cstrong\u003e1,000W RMS at 16V\u003c\/strong\u003e — in a chassis that measures just \u003cstrong\u003e9.8\" x 7.8\" x 2.2\"\u003c\/strong\u003e. Part of SoundQubed’s S-Series lineup, the S1-850.1 is the ideal entry-level monoblock for daily drivers who need real bass from their car audio system without breaking the bank. Mount it just about anywhere — its deceptively small form factor fits under seats, in trunks, and in custom enclosure builds with ease.\u003c\/p\u003e\n\n\u003cp\u003eThe S1-850.1 features an \u003cstrong\u003eon-board low-pass filter (20–200 Hz)\u003c\/strong\u003e for precise frequency control, a \u003cstrong\u003esubsonic filter (10–50 Hz)\u003c\/strong\u003e to protect your drivers from extreme low-resonance distortion, and a \u003cstrong\u003eclipping indicator on the included bass remote\u003c\/strong\u003e so you always know exactly where your gain is set. Input sensitivity runs from \u003cstrong\u003e0.15V to 5V\u003c\/strong\u003e for compatibility with virtually any head unit or DSP. Power connections use \u003cstrong\u003e4-gauge set screw terminals\u003c\/strong\u003e for clean current flow, and \u003cstrong\u003e10-gauge speaker terminals\u003c\/strong\u003e ensure consistent voltage delivery to your subwoofer. And when you’re ready to go bigger — the S1-850.1 is \u003cstrong\u003estrappable\u003c\/strong\u003e, so you can link two units for even more output as your build grows.\u003c\/p\u003e\n\n\u003cp\u003eOperating across a wide \u003cstrong\u003e8.5V–16V\u003c\/strong\u003e working voltage range with a maximum amperage draw of \u003cstrong\u003e90A\u003c\/strong\u003e, the S1-850.1 is compatible with stock and lightly upgraded electrical systems alike. It’s a reliable, efficient, and affordable monoblock that delivers exactly what it promises — every time.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the SoundQubed S1-850.1?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e900W RMS @ 1 Ohm (14.4V) \/ 1,000W+ @ 16V\u003c\/strong\u003e — Real, usable power for daily driver subwoofer builds — more than enough for most HDS2.2 and HDS3.1 applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass D Efficiency\u003c\/strong\u003e — High-efficiency design minimizes heat and maximizes power delivery to your subwoofers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStrappable\u003c\/strong\u003e — Link two S1-850.1 units for even more output when your build demands it — a natural upgrade path as you grow your system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClipping Indicator on Bass Remote\u003c\/strong\u003e — Know exactly where your gain is set and avoid distortion — protects your subwoofers and your ears.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable LPF (20–200 Hz) + Subsonic Filter (10–50 Hz)\u003c\/strong\u003e — Precise crossover and subsonic control for optimal tuning and driver protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4GA Power Terminals + 10GA Speaker Terminals\u003c\/strong\u003e — Clean current flow and consistent voltage delivery for reliable daily performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8.5V–16V Working Voltage Range\u003c\/strong\u003e — Compatible with stock and lightly upgraded electrical systems alike.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact 9.8\" x 7.8\" x 2.2\" Chassis\u003c\/strong\u003e — One of the smallest 900W monoblocks available — fits virtually anywhere.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAmplifier \u0026amp; Subwoofer Recommendations\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eSubwoofer Pairing:\u003c\/strong\u003e The S1-850.1 is an ideal match for SoundQubed’s \u003cstrong\u003eHDS2.2 Series subwoofers\u003c\/strong\u003e — run one or two wired to a 1Ω or 2Ω final load for a perfectly matched daily driver system. It also pairs well with a single \u003cstrong\u003eHDS3.1\u003c\/strong\u003e for a clean, punchy daily build. Use the variable low-pass filter to set your crossover point between 50–80 Hz for most ported builds, and engage the subsonic filter to protect your drivers below their tuning frequency.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eElectrical Requirements:\u003c\/strong\u003e The S1-850.1 is compatible with most stock electrical systems for everyday listening. Maximum amperage draw is 90A, so a standard 4-gauge wiring kit is all you need. For maximum output at 16V, a high-output alternator and upgraded battery are recommended.\u003c\/p\u003e\n\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eS1-850.1\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eAmplifier Class\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eChannels\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eWorking Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e8.5V – 16V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eMaximum Amperage\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e90A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eRMS Power @ 4 Ohm (14.4V)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e375W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eRMS Power @ 2 Ohm (14.4V)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e625W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eRMS Power @ 1 Ohm (14.4V)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e900W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e10 Hz – 200 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eSignal to Noise Ratio\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u0026gt;80 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eDamping Factor\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u0026gt;100\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e0.15V – 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eSubsonic Filter\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e10 Hz – 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eLow-Pass Filter\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e20 Hz – 200 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003ePower Terminal Size\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e4 Gauge (Set Screw)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eSpeaker Terminal Size\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e10 Gauge\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eClipping Indicator\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eYes (on Bass Remote)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eStrappable\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eOverall Length\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e9.8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eOverall Width\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e7.8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eOverall Height\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2.2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What subwoofers pair best with the S1-850.1?\u003c\/strong\u003e\u003cbr\u003e\nA: The S1-850.1 is a perfect match for one or two \u003cstrong\u003eSoundQubed HDS2.2 Series subwoofers\u003c\/strong\u003e, or a single \u003cstrong\u003eHDS3.1\u003c\/strong\u003e for a clean daily driver build. Any subwoofer rated between 400–900W RMS is a solid pairing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I strap two S1-850.1 amplifiers together?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes — the S1-850.1 is strappable, allowing you to link two units for significantly more output. This is a great upgrade path if you start with one amp and want to grow your system later without buying a completely new amplifier.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What does the clipping indicator do?\u003c\/strong\u003e\u003cbr\u003e\nA: The clipping indicator on the bass remote lights up when the amplifier is being pushed into clipping (distortion). This lets you set your gain correctly and protect your subwoofers from distortion damage — an invaluable feature for daily driver builds.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will the S1-850.1 work with my stock electrical system?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes — the S1-850.1 draws a maximum of 90A and operates from 8.5V to 16V, making it compatible with most stock electrical systems. A standard 4-gauge wiring kit is all you need for everyday listening at full output.\u003c\/p\u003e","brand":"SoundQubed","offers":[{"title":"Default Title","offer_id":49849768280292,"sku":null,"price":299.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/4__59485.webp?v=1789257324","url":"https:\/\/www.12voltoutlet.com\/products\/soundqubed-s1-850-1-s-series-monoblock-amplifier","provider":"12 Volt Outlet","version":"1.0","type":"link"}