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2.1 Channel Audio Receiver Power Amplifier Module
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2.1 Channel High-Fidelity Sound
100W RMS High Power Output
Multi-Input Connectivity
Professional Design
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Creators Swear By It – Here’s Why 2.1 Channel Audio Receiver Power Amplifier Module Is a Game-Changer！
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Customers Give Positive Reviews
Powerful Bass
Easy to Install
No Overheating
Crystal-Clear Audio
Recommended for DIY enthusiasts
"This amp module revived my old speakers! Stable Bluetooth, punchy bass, and compact size – unbelievable value for money!"
Jessica Miller
Verifed purchase
"A DIY gem! Easy to wire, powerful enough to shake the room during movies. Stays cool even after hours of use – no fan noise!"
David Wilson
Verifed purchase
Still struggle with traditional audio receivers?
Traditional power amplifiers are bulky and have poor heat dissipation?
Solution:
All aluminum compact design, reducing volume by 60%, passive heat dissipation without the need for fans.
High Bluetooth latency and compressed sound quality?
Solution:
Bluetooth 5.0+APTX low latency protocol, with a transmission rate of up to 3Mbps.
Single interface, poor compatibility?
Solution:
4 input methods, supporting mixed connection of old and new devices.
DIY wiring is complex and prone to errors?
Solution:
Color coded terminal posts with anti reverse plug design.
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Why You Need It
Professional level 2.1 channel architecture
Left and right channel THD+N<0.1%, bass channel can be adjusted separately (50-150Hz adjustable).Application scenarios: Home theater, gaming and esports, Hi Fi music.
Efficient D-class amplifier technology
Compared to AB class amplifiers, energy consumption is reduced by 50% and battery life is increased by 30%.
All metal shielding for anti-interference
The electromagnetic shielding layer effectively blocks router/mobile phone signal interference.
Intelligent protection circuit
Triple protection against overvoltage, overcurrent, and short circuit to avoid burning out the speaker.
Key Advantages Over Competitors
| Feature | Our Product | Other Products |
|---|---|---|
| Power Output | 100W RMS (200W peak) | Typically 60-80W RMS |
| Connectivity | Bluetooth 5.0 + AUX/Optical/Coaxial | Usually 1-2 input options |
| Bass Control | Adjustable sub channel (50-150Hz) | Fixed bass or no sub-out |
| Heat Dissipation | Full aluminum passive cooling | Often plastic + noisy fans |
| Upgrade Flexibility | Modular design (swap Bluetooth/AMP boards) | Fixed non-upgradable units |
| Protection | Triple protection system | Basic overload protection |
Product Specifications
Product Model:
ZK-MT21
Input sensitivity:
500mV
Input mode:
AUX+BT
Compatible speaker:
20~100W, 4~8 Ω
Here’s Why 2.1 Channel Audio Receiver Power Amplifier Module become so popular
Trusted by thousands of streamers and content creators!
"Transformed my car audio system! Adjustable bass, zero-latency Bluetooth – like a concert on wheels. The protection circuit handles voltage spikes perfectly."
Emily S.
Verified purchase
"This amp module completely upgraded my home theater! The Bluetooth is fast and stable, the bass is powerful, and it's so compact. Unbeatable value – outperforms premium brands!"
Michael T.
Verified purchase
"As an audio enthusiast, this amp module surprised me. Multiple input options are very practical, delivering pure sound without noise. The all-aluminum casing provides excellent heat dissipation for stable prolonged use."
Sarah J.
Verified purchase
Frequently Asked Questions
Q: What input options does this amplifier support?
PURCHASED
A: It supports Bluetooth 5.0, AUX (3.5mm audio input), optical (TOSLINK), and coaxial input, compatible with smartphones, PCs, TVs, and more.
Q: What speaker impedance can this amp drive?
PURCHASED
A: It supports 4Ω-8Ω speakers. For 4Ω speakers, we recommend keeping power under 80W for optimal stability and sound quality.
Q: Is the Bluetooth connection stable? What's the range?
PURCHASED
A: With Bluetooth 5.0, it provides stable connection up to 10m in open space (~5m through walls), outperforming most competitors.
Q: Is the subwoofer output adjustable?
PURCHASED
A: Yes! The dedicated subwoofer channel allows 50Hz-150Hz frequency adjustment for customized bass performance.
Q: Will it overheat during prolonged use?
PURCHASED
A: The aluminum chassis and Class-D amp design ensure minimal heat buildup—only slightly warm after 8 hours of continuous use.
