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
- 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.
- Wide Voltage Adaptability (DC12V-24V)
- Directly supports car batteries (12V) and outdoor power stations (24V), with automatic voltage matching—no manual adjustments needed.
- 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.
- 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.
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.
Application Scenarios
- 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.
- 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.
- DIY Audio Projects
- Retrofit vintage radios into smart speakers or build outdoor dance systems at 50% lower cost than branded amplifiers.
- Commercial Audio Zoning
- Power background music in restaurants/gyms, driving 4–6 ceiling speakers + 1 subwoofer per zone.
Solving User Pain Points
