Specification:
Product Name: 2.1‑Channel Bluetooth Digital Power Amplifier Board
Model: YS‑MT21
Channels: 2.1 (Left + Right + Subwoofer)
Total Output Power: 200W
Left channel: ≤50W
Right channel: ≤50W
Subwoofer: ≤100W
Input Modes: Bluetooth + 3.5mm AUX audio input
Input Sensitivity: 500 mV
Power Supply: DC 12–24V, ≥5A (terminal connector)
Speaker Compatibility: 10–200W, 2–8 Ω speakers
Controls:
Master volume
Left/Right channel bass
Left/Right channel treble
Subwoofer volume
Subwoofer frequency
Protection Functions: OVP / UVP / OTP / SCP
Over‑voltage, under‑voltage, over‑temperature and short‑circuit protection

Features:
1. 200W high-power 2.1-channel output: 50W+50W stereo channels plus 100W subwoofer output, ideal for home theater, KTV, stage or desktop audio upgrades.
2. Independent EQ & subwoofer control: Separate knobs for treble, bass, subwoofer volume and subwoofer cutoff frequency enable accurate tuning for different speakers and rooms.
3. Dual input with seamless switching: Supports both Bluetooth wireless audio and wired AUX input, making it convenient to connect phones, tablets, PCs and players.
4. Hi‑Fi amplifier circuitry: Precision components, high‑capacity power capacitors and low‑noise design deliver clear, detailed sound with strong low‑frequency performance.
5. Multi‑layer protection design: Built‑in power management automatically handles over‑voltage, under‑voltage, overheating and short‑circuit to protect amplifier and speakers.
6. Compact structure with metal control knobs: Lightweight board layout with clearly labeled terminals and full‑size aluminum knobs for easy installation and comfortable manual adjustment.

Package Includes:
1 x Amplifier Board