Network PA System – Multi‑function Network Power Amplifier (2U, 80‑500W, Class D, Linux)

Features:

- High‑grade aluminum 2U black brushed panel, 19‑inch rack‑mounted installation, beautiful and elegant.
- Adopts domestic integrated chips and Linux system, excellent stability, security, portability, flexibility, incomparable to single‑chip solutions.
- CPU: ARM Cortex A7 @ 900MHz.
- Audio Codec: Supports software codec, compatible with G.711, G.726, ADPCM, and audio 3A (AEC/ANR/AGC).
- Standard 1×10/100M RJ45 network interface, LAN/WAN deployment.
- Built‑in 1‑channel network hardware audio decoding module for real‑time/timed music playback.
- Sampling rate adjustable in background; freely select highest sampling rate in LAN for optimal sound quality (WAV 8K/16K/44.1K, AAC 16K/44.1K/48K optional).
- Background hardware resource monitoring: CPU/memory usage ratio and continuous running time.
- Supports remote upgrade of standalone and batch units over LAN/WAN.
- Volume potentiometer adopts fully sealed dust‑proof process, permanently dust‑proof, noise‑free adjustment.
- Adopts wide‑voltage PFC circuit, supports AC100V‑240V, immune to voltage fluctuations.
- High‑efficiency Class D digital amplifier with overload, overvoltage, overheating, DC protection.
- Rated output power: 80W/120W/180W/240W/300W/350W/500W optional.
- Output modes: 4‑16Ω fixed impedance, 70V/100V constant voltage.
- Independent treble and bass adjustment.
- 2‑channel local microphone input, independent volume.
- 1‑channel local line input, independent volume.
- 1‑channel EMC emergency audio input for priority broadcast (same level as network signal).
- 1‑channel auxiliary audio output for external power amplifiers.
- 1‑channel local network volume adjustment.
- 1‑channel USB input, plug‑and‑play playback of USB flash drive tracks.
- 4 LED status indicators: power, audio signal, peak, protection.
- Built‑in 3‑wire forced cut output interface, unlimited paging zones.
- Built‑in DC24V power output for 4‑wire paging zone controllers.
- 1‑channel short‑circuit signal input (trigger local alarm via software).
- 1‑channel short‑circuit signal trigger output (drive linked devices).
- 3‑level priority: EMC & network highest, MIC1 second, MIC2 & AUX third.
- Intelligent power management: automatically turns off main power when no signal (energy‑saving), manual override available.
- Built‑in master/slave switch detection module: supports auto‑switch to backup power input within 0.3s on network failure or device fault.
- 1‑channel 100V constant voltage backup power input (supports one‑master‑multi‑slave or multi‑master‑one‑slave configuration).
- Cooling fan with intelligent temperature control: low speed at low temperature, automatically increases with temperature rise.
- Standby power <10W, meeting national environmental protection and energy‑saving certification.

This **IP Network PA System** multi‑function network power amplifier delivers flexible power options, intelligent power management, and reliable dual‑mode backup for professional IP broadcasting.

Technical Specifications:

- Network Interface: Standard RJ45
- Supported Protocols: HTTP, HTTPS, UDP, TCP/IP, RTP, RTSP, RTMP, MQTT, FTP, SIP
- Audio Format: mp3, wav
- THD: ≤0.5% (at 1/3 power)
- Audio Mode: 16‑bit stereo CD quality
- Sampling Rate: 8K‑48K
- Bit Rate: 8K‑320Kbps
- LINE OUT Level: 775mV (2×RCA), Impedance: 470Ω
- AUX Input Sensitivity: 300mV (unbalanced)
- MIC Input Sensitivity: 10mV (unbalanced)
- EMC Input Sensitivity: 300mV (unbalanced)
- Standby Power: <10W
- Frequency Response: 90Hz~15KHz
- Output Mode: 4‑16Ω, 70V/100V
- Protection: DC output, overload, over‑temperature, short‑circuit
- Operating Temp: -20℃~60℃
- Humidity: 20%~80% RH
- Input Power: AC100~250V, 50/60Hz
- Dimensions: 485×325×90mm
- Packaging: 520×420×185mm
- Net/Gross Weight: (customizable)

In summary, this **IP Network PA System** multi‑function network power amplifier with wide power range, Class D efficiency, and intelligent backup switching is the ideal choice for schools, hotels, factories, and commercial buildings requiring reliable, high‑performance IP audio distribution with analog fallback.