2.1 Channel Bluetooth Amplifier Board
.product-detail-container { /* Design System Variables */ --primary: #d97706; /* Audio Copper/Amber */ --primary-hover: #b45309; --text-main: #111827; --text-sub: #4b5563; --bg-bod y: #ffffff; --bg-card: #f9fafb; --border-color: #e5e7eb; --radius-md: 8px; --radius-lg: 12px; --shadow-sm: 0 1px 2px rgba(0,0,0,0.05); --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1); --spacing-gap: clamp(2rem, 5vw, 4rem); /* Typography & Spacing Defaults */ max-width: 1200px; margin: 0 auto; padding: 0 5%; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: var(--text-main); box-sizing: border-box; overflow-wrap: break-word; word-break: break-word; } .product-detail-container * { box-sizing: inherit; } /* Large Typography System */ .product-detail-container h1 { font-size: clamp(32px, 4vw, 44px); line-height: 1.2; font-weight: 800; margin-bottom: 1rem; color: var(--text-main); } .product-detail-container h2 { font-size: clamp(24px, 3vw, 32px); line-height: 1.3; font-weight: 700; margin-bottom: 1rem; color: var(--text-main); } .product-detail-container h3 { font-size: clamp(20px, 2.5vw, 24px); line-height: 1.4; font-weight: 600; margin-bottom: 0.75rem; color: var(--text-main); } .product-detail-container p { font-size: clamp(18px, 2vw, 20px); line-height: 1.7; color: var(--text-sub); margin-bottom: 1.5rem; } /* Static Visual Badges (Unclickable CTA Replacement) */ .badge-container { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 1.5rem; } .tech-badge { background: var(--bg-card); border: 1px solid var(--border-color); padding: 8px 16px; border-radius: 50px; font-size: 16px; font-weight: 600; color: var(--primary); user-select: none; } /* Image Protocol (Option A: Fluid Layout) */ .product-detail-container img { width: 100%; height: auto; display: block; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); } .img-placeholder { width: 100%; aspect-ratio: 4 / 3; background: #f8f9fa; border: 2px dashed #cbd5e1; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: #64748b; font-size: 18px; font-weight: 500; } /* Mobile Lock Pattern (Image-Text Strict Ordering) */ .hero-section { display: flex; flex-direction: column; gap: var(--spacing-gap); margin-bottom: var(--spacing-gap); padding-top: 2rem; } .feature-item { display: flex; flex-direction: column; /* Force Mobile Image Top, Text Bottom */ gap: var(--spacing-gap); margin-bottom: var(--spacing-gap); } .feature-media, .feature-copy { width: 100%; } /* Desktop Z-Pattern */ @media (min-width: 768px) { .hero-section { flex-direction: row; align-items: center; } .hero-section > div { width: 50%; } .feature-item { flex-direction: row; align-items: center; } .feature-item:nth-child(even) { flex-direction: row-reverse; } .feature-media, .feature-copy { width: 50%; } } /* Specifications Table (Card-Based Mobile) */ .specs-module { margin-top: var(--spacing-gap); margin-bottom: var(--spacing-gap); } .specs-table { width: 100%; border-collapse: collapse; margin-top: 1.5rem; } .specs-table th, .specs-table td { padding: 16px; text-align: left; border-bottom: 1px solid var(--border-color); font-size: 18px; color: var(--text-sub); } .specs-table th { font-weight: 600; background-color: var(--bg-card); color: var(--text-main); width: 35%; } @media (max-width: 767px) { .specs-table, .specs-table thead, .specs-table tbody, .specs-table tr, .specs-table td { display: block; width: 100%; } .specs-table thead { display: none; /* Hide native header */ } .specs-table tr { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); margin-bottom: 16px; padding: 12px; } .specs-table td { display: flex; flex-direction: column; /* Better for long values */ border-bottom: none; padding: 8px; } .specs-table td:not(:last-child) { border-bottom: 1px dashed var(--border-color); } .specs-table td::before { content: attr(data-label); font-weight: 700; color: var(--text-main); margin-bottom: 4px; font-size: 16px; } } /* FAQ Section */ .faq-module { margin-top: var(--spacing-gap); margin-bottom: var(--spacing-gap); background: var(--bg-card); padding: var(--spacing-gap); border-radius: var(--radius-lg); } .faq-item { border-bottom: 1px solid var(--border-color); padding: 24px 0; } .faq-item:last-child { border-bottom: none; padding-bottom: 0; } .faq-question { font-weight: 700; margin-bottom: 12px; color: var(--text-main); font-size: clamp(20px, 2.5vw, 22px); line-height: 1.4; } .faq-answer { color: var(--text-sub); font-size: clamp(18px, 2vw, 20px); line-height: 1.7; } /* Social Proof Text */ .social-proof { display: inline-flex; align-items: center; font-size: 16px; font-weight: 600; color: var(--text-main); margin-bottom: 1.5rem; } .social-proof::before { content: "★ ★ ★ ★ ★"; color: var(--primary); margin-right: 8px; letter-spacing: 2px; } Trusted by 10,000+ Audiophiles & DIYers Unleash True Theater-Grade Audio at Home Upgrade your sound system with uncompromised power. Driven by dual TPA3116D2 chips, this 2.1 channel amplifier board delivers a thunderous 50W+50W+100W output with crystal-clear precision. Bluetooth 5.1 THD ≤0.1% 50W+50W+100W Flawless Wireless & Wired Audio Experience ultra-low distortion (THD ≤0.1%) and pure sound transmission. Seamlessly switch between the robust Bluetooth 5.1 wireless connection and traditional AUX input to suit your ultimate audio setup. Note: For optimal performance in AUX mode, please ensure the Bluetooth connection is fully disconnected. Precision Tone Control Dial in your ideal audio signature without touching your media player. Equipped with independent physical treble and bass adjustment knobs directly on the module, giving you absolute analog control over your acoustic environment. Engineered to Last & Protect Built with premium components including an AM interference suppression function and low noise front stage operational amplifier. Featuring an integrated protective case, copper DC connectors, and insulated terminals that withstand high current safely without overheating. Over-voltage Protection Short-circuit Protection Technical Specifications Specification Details Core Chip Dual TPA3116D2 Audio Output 2.1 Channel Stereo (50W L + 50W R + 100W Subwoofer) Input Methods Bluetooth 5.1 / AUX Audio Distortion (THD) ≤ 0.1% Dimensions 9.3 × 9.0 × 2.2 cm / 3.66 × 3.54 × 0.87 in Estimated Weight 130.0 g / 4.6 oz Frequently Asked Questions Do I need professional skills to install this amplifier board? Not at all. The illustration of each interface is clearly printed directly on the protective plate, making it highly intuitive to wire, install, and use even without complex instructions. Why is there no sound when I plug in the AUX cable? When using the AUX input mode, you must first confirm that the Bluetooth connection to this module has been disconnected. The board prioritizes Bluetooth, so disconnecting it will free up the audio channel for your wired AUX source. Does the board overheat when running at full 200W capacity? The module is specifically designed with comprehensive over-heat protection, premium copper DC connectors, and an integrated heat dissipation setup to safely handle high currents without dangerous temperature spikes during long-term use.