{"product_id":"aunex-ac600k4-4-channel-car-amplifier-100w-rms","title":"AC600K4","description":"\u003cstyle\u003e\n  :root {\n    --red:       #8b0000;\n    --red-dim:   #600000;\n    --page-bg:   #ffffff;\n    --surface-2: #f5f5f2;\n    --surface-3: #eeeeea;\n    --border:    #ddddd8;\n    --ink:       #111110;\n    --ink-soft:  #333330;\n    --mid-text:  #666660;\n    --mono:      'Share Tech Mono', monospace;\n    --red-light: #f0e4e4;\n    --red-mid:   #d4a0a0;\n  }\n\n  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }\n\n  .seo-card {\n    background: var(--page-bg);\n    border-top: 1px solid var(--border);\n    padding: 100px max(72px, calc((100% - 1440px) \/ 2 + 72px));\n    font-size: 16px;\n  }\n\n  .seo-card-inner {\n    display: grid;\n    grid-template-columns: 1fr;\n    gap: 60px;\n  }\n\n  \/* ─── LEAD ─── *\/\n  .seo-lead-tag {\n    font-family: var(--mono);\n    font-size: 12px;\n    color: var(--red);\n    letter-spacing: 0.22em;\n    text-transform: uppercase;\n    display: block;\n    margin-bottom: 16px;\n  }\n\n  .seo-lead-title {\n    font-family: 'Barlow Condensed', sans-serif;\n    font-weight: 800;\n    font-size: clamp(32px, 4vw, 52px);\n    line-height: 1;\n    text-transform: uppercase;\n    letter-spacing: 0.01em;\n    color: var(--ink);\n    margin-bottom: 24px;\n  }\n\n  .seo-lead-title .red { color: var(--red); }\n\n  .seo-lead-intro {\n    font-size: 15.5px;\n    line-height: 1.8;\n    color: var(--ink-soft);\n    max-width: 820px;\n  }\n\n  .seo-lead-intro strong { color: var(--ink); font-weight: 600; }\n\n  \/* ─── BODY GRID ─── *\/\n  .seo-body {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 2px;\n    background: var(--border);\n  }\n\n  .seo-block {\n    background: var(--page-bg);\n    padding: 32px 28px;\n    transition: background 0.2s;\n    position: relative;\n    overflow: hidden;\n  }\n\n  .seo-block::after {\n    content: '';\n    position: absolute;\n    bottom: 0; left: 0; right: 0;\n    height: 2px;\n    background: var(--red);\n    transform: scaleX(0);\n    transform-origin: left;\n    transition: transform 0.3s ease;\n  }\n\n  .seo-block:hover { background: var(--surface-2); }\n  .seo-block:hover::after { transform: scaleX(1); }\n\n  .seo-block h3 {\n    font-family: 'Barlow Condensed', sans-serif;\n    font-weight: 600;\n    font-size: 16px;\n    text-transform: uppercase;\n    letter-spacing: 0.06em;\n    color: var(--ink);\n    margin-bottom: 10px;\n  }\n\n  .seo-block p {\n    font-size: 13.5px;\n    line-height: 1.7;\n    color: var(--mid-text);\n    font-family: 'Open Sans', sans-serif;\n    font-weight: 300;\n  }\n\n  \/* ─── KEYWORD TAGS ─── *\/\n  .seo-tags {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 8px;\n    padding-top: 8px;\n    border-top: 1px solid var(--border);\n  }\n\n  .seo-tag {\n    font-family: var(--mono);\n    font-size: 11px;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    color: var(--mid-text);\n    border: 1px solid var(--border);\n    padding: 6px 14px;\n    background: var(--surface-2);\n  }\n\n  \/* ─── RESPONSIVE ─── *\/\n  @media (max-width: 900px) {\n    .seo-card { padding: 72px 24px; }\n    .seo-body { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\n\u003csection class=\"seo-card\"\u003e\n  \u003cdiv class=\"seo-card-inner\"\u003e\n\n    \u003c!-- LEAD --\u003e\n    \u003cdiv class=\"seo-lead\"\u003e\n      \u003cspan class=\"seo-lead-tag\"\u003e◆ AC Series · Compact Full-Range Digital 4-Channel · 2026 Edition\u003c\/span\u003e\n      \u003ch2 class=\"seo-lead-title\"\u003eAUNEX AC600\u003cspan class=\"red\"\u003eK4\u003c\/span\u003e — 100W × 4 RMS\u003cbr\u003e4-Channel Car Amplifier | One Honest Number.\u003c\/h2\u003e\n      \u003cp class=\"seo-lead-intro\"\u003eThe AUNEX AC600K4 is a compact full-range digital 4-channel amplifier that delivers \u003cstrong\u003e100 watts RMS per channel at 4 ohms\u003c\/strong\u003e — independently tested, not claimed. Most 4-channel amplifiers at this price point overstate output, spread peak-rated watts across four channels, and leave your drivers working harder than they should. The AC600K4 does not. Four channels. One verified standard. No combined peak totals. No fine print. Bridge any pair for 350W RMS.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- BODY BLOCKS --\u003e\n    \u003cdiv class=\"seo-body\"\u003e\n\n      \u003cdiv class=\"seo-block\"\u003e\n        \u003ch3\u003eIndependently Verified RMS — All 4 Channels\u003c\/h3\u003e\n        \u003cp\u003e100W RMS per channel at 4Ω. 175W per channel at 2Ω. 350W per pair bridged at 4Ω. Every channel independently tested at rated load simultaneously — not one channel driven while the others idle. What’s on the spec sheet is what comes out of all four terminals, in every configuration.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"seo-block\"\u003e\n        \u003ch3\u003eFour Channels. Any Configuration.\u003c\/h3\u003e\n        \u003cp\u003eRun all four channels for a complete front and rear stage at 100W RMS each. Bridge to two channels for 350W RMS stereo — enough output for a dedicated subwoofer pair while the remaining channels handle your front stage. One amplifier, multiple install options, the same verified standard in every configuration.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"seo-block\"\u003e\n        \u003ch3\u003eOEM Upgrade — High-Level Input Ready\u003c\/h3\u003e\n        \u003cp\u003eBalanced low-level inputs reject common-mode noise before it reaches the signal chain. High-level inputs accommodate factory OEM source units directly — no aftermarket head unit required. Input sensitivity spans 400mV to 20V. The AC600K4 installs cleanly into factory systems as a direct upgrade, without additional adapters in most installations.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"seo-block\"\u003e\n        \u003ch3\u003eWide-Range HPF and LPF — 12dB\/Octave\u003c\/h3\u003e\n        \u003cp\u003eHigh-pass filtering from 400Hz to 4kHz and low-pass filtering from 40Hz to 400Hz give full crossover control over every channel — protect tweeters from low-frequency excursion, eliminate driver overlap, and tune the system precisely without an outboard processor. A \u0026gt;89 dB signal-to-noise ratio keeps the background dead-silent between tracks.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"seo-block\"\u003e\n        \u003ch3\u003e4-Layer SMD PCB — Built to Last\u003c\/h3\u003e\n        \u003cp\u003eWhere most 4-channel amplifiers at this price point use a 2-layer PCB, the AC600K4 is built on a 4-layer surface-mount design. Dedicated internal power and ground planes reduce impedance across all four output stages, improve thermal dissipation, and deliver structural rigidity that holds up to vehicle vibration over the long term — all in a compact 8.31″ chassis.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"seo-block\"\u003e\n        \u003ch3\u003e4-Way Protection — Always Active\u003c\/h3\u003e\n        \u003cp\u003eThermal shutdown, short-circuit, over-voltage, and under-voltage protection operate across all four channels independently. Solid nickel-plated terminals maintain a low-resistance connection years after install. Soft on\/off delay eliminates speaker thump at startup and shutdown — protecting tweeters and mid-range drivers from the voltage transients that cause premature wear.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n    \u003c\/div\u003e\n\n    \u003c!-- KEYWORD TAGS --\u003e\n    \u003cdiv class=\"seo-tags\"\u003e\n      \u003cspan class=\"seo-tag\"\u003e4-Channel Car Amplifier\u003c\/span\u003e\n      \u003cspan class=\"seo-tag\"\u003e100W x 4 RMS\u003c\/span\u003e\n      \u003cspan class=\"seo-tag\"\u003eFull-Range Car Amp\u003c\/span\u003e\n      \u003cspan class=\"seo-tag\"\u003eOEM Upgrade Amplifier\u003c\/span\u003e\n      \u003cspan class=\"seo-tag\"\u003eBridgeable 4-Channel\u003c\/span\u003e\n      \u003cspan class=\"seo-tag\"\u003eCompact Car Amp\u003c\/span\u003e\n      \u003cspan class=\"seo-tag\"\u003eLab-Verified Power\u003c\/span\u003e\n      \u003cspan class=\"seo-tag\"\u003eAC Series 2026\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/section\u003e\n","brand":"AUNEX","offers":[{"title":"Default Title","offer_id":45043981123681,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/aunexusa.com\/products\/aunex-ac600k4-4-channel-car-amplifier-100w-rms","provider":"AUNEX","version":"1.0","type":"link"}