Network PA System – 5‑Zone MP3 Power Amplifier (2U, Class D, 70V/100V/4‑16Ω, Independent Zone Volume)

Features:

- High‑grade aluminum 2U black anodized brushed panel, beautiful and elegant.
- All internal PCBs adopt double‑sided SMT chip circuits for more stable and reliable performance.
- Adopts internationally advanced Class D digital power amplifier circuit, featuring high efficiency and energy saving.
- Output adopts isolated audio transformer, effectively enhancing load capacity and ensuring more stable and reliable use.
- 5‑channel signal input (3 microphone, 2 line).
- 1‑channel auxiliary signal output, which can be used to connect the next power amplifier.
- Built‑in 5‑zone output, with independent adjustable volume for each zone.
- Built‑in Bluetooth 5.0 wireless audio reception, with a receiving distance of up to 10 meters in open areas.
- Equipped with USB port, supporting lossless audio formats including APE, FLAC, WMA, WAV, MP3 for playback.
- Built‑in FM radio with remote control function.
- 7‑digit LED fluorescent display with full‑function touch button control.
- Equipped with 100V/70V constant voltage output and 4‑16Ω constant impedance output.
- Master volume adjustment function, independent volume adjustment for each input channel.
- Independent treble and bass adjustment.
- Volume potentiometer adopts fully sealed dust‑proof process, permanently dust‑proof with noise‑free adjustment.
- Internal signals adopt balanced signal circuit, with strong anti‑interference and lower noise.
- MIC1 automatic mute with adjustment switch, adjustable range: 0 to -30dB.
- 5‑unit LED level display with clear dynamic indication.
- Equipped with comprehensive protection functions: output short‑circuit protection, DC protection, overload protection, over‑temperature protection, etc.
- Cooling fan adopts automatic speed regulation design: lower temperature leads to slower speed, effectively reducing standby operating noise.

This **Network PA System** amplifier integrates 5‑zone volume control, Bluetooth, USB/FM, and Class D efficiency for flexible public address applications.

In summary, this **Network PA System** 2U power amplifier with 5 independent zone outputs, multiple audio sources, and comprehensive protection is the ideal choice for schools, shopping malls, hotels, and commercial buildings requiring distributed audio with zone‑level volume control.