2.1 Channel Digital Amplifier Board | 2×50W+100W Heavy Bass DC12V-24V Subwoofer + Stereo Audio Module

Pro 2.1 Channel Audio Amplifier Module | 12V-24V 100W Sub + 2x50W Stereo DIY HiFi Kit

Product parameters:
Product Name: 2.1 Channel Audio Amplifier Board
Power supply voltage: DC12-24V
Output power: 50W * 2+100W subwoofer * 1
Output load: 4-8Q
Frequency response range: 14-100KHz
Number of channels: 3 (left channel+right channel+subwoofer) Switching frequency: 1.2MHz
Power supply voltage: 12V8 Euro speaker/12W (left channel)+12W (right channel) 4 Euro speaker/20 (left channel)+20W (left channel),
8 euros/18+18W, 4 euros/over 30+30W, 15V
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19V8 Euro/32+32W, 4 Euro/over 45+45W
24V8 Euro/38+38W, 4 Euro/greater than 55+55W

Core Product Advantages

1. True 2.1-Channel Independent Drive
   • 100W subwoofer (low-frequency) + 2×50W stereo (mid/high frequencies), featuring three dedicated amplifier chips to eliminate signal interference. Bass extends down to 35Hz with 2× stronger punch compared to standard 50W subwoofer outputs.
   • Vs. Competitors: Generic 2.1 amps offer only 50W bass power; this model drives 12" subwoofers with 60% more cabinet vibration at full volume.
2. Wide Voltage Adaptability (DC12V-24V)
   • Directly supports car batteries (12V) and outdoor power stations (24V), with automatic voltage matching—no manual adjustments needed.
3. Ultra-Low Distortion (THD < 0.05%)
   • Class-D digital amplification + independent power filtering reduces distortion by 90% vs. Class-AB amps, ensuring crystal-clear vocals and precise instrument placement.
4. Efficient Thermal Design
   • Aluminum heatsink + thermal conductive paste cover amplifier chips, maintaining a ≤35°C temperature rise after 4 hours of continuous use—eliminating thermal shutdowns.

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Key Features

• Input Options: Dual inputs (3.5mm audio jack + RCA ports) for compatibility with phones, PCs, TVs, and CD players.
• Protection Mechanisms: Quad-layer safety (overcurrent, short-circuit, DC, and overheating protection) with a <0.3% failure rate.
• Beginner-Friendly: Screw-terminal outputs labeled "Left/Right/Sub," enabling 15-minute installation for novices; includes multilingual (EN/CN) wiring videos.
• Compact Size: 15cm × 10cm × 4cm, fitting into car trunks or audio cabinets.

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Application Scenarios

1. Car Audio Upgrades
   • Replace weak factory amps to power door speakers (2×50W) + trunk subwoofer (100W), delivering 3× louder in-car KTV or movie effects.
2. Home Theater Bass Enhancement
   • Serve as the 2.1 core for 5.1 systems, pairing with a 10" subwoofer and bookshelf speakers to recreate earthquake-like rumbles in films like Mad Max: Fury Road.
3. DIY Audio Projects
   • Retrofit vintage radios into smart speakers or build outdoor dance systems at 50% lower cost than branded amplifiers.
4. Commercial Audio Zoning
   • Power background music in restaurants/gyms, driving 4–6 ceiling speakers + 1 subwoofer per zone.

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Solving User Pain Points

• Problem 1: Weak bass due to underpowered amps?
  → 100W dedicated bass channel makes 12" subwoofers visibly vibrate, with palpable air pressure during playback (tested at 1m distance).

• Problem 2: Voltage instability causing audio dropouts in cars?
  → 12V–24V auto-adaptation ensures stable performance even during engine starts (voltage spikes to 14.4V), with no noise or shutdowns.

• Problem 3: Complex wiring scaring off DIY beginners?
  → Color-coded interfaces + video guides clearly mark "+"/"-" terminals and channel assignments, guaranteeing first-time success..