Network PA System – Digital Network Power Amplifier (1U, Class D, Linux)

Features:

- High‑grade aluminum 1U 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.
- Output modes: 4‑16Ω fixed impedance, 70V/100V constant voltage output.
- 1‑channel local microphone input with independent volume.
- 1‑channel local line input with 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 USB input, plug‑and‑play playback of USB flash drive tracks.
- 4 LED status indicators: power, audio signal, peak, protection.
- 2‑level priority: EMC & network highest, MIC & AUX second.
- Intelligent power management: automatically turns off main power when no signal (energy‑saving), manual override available.
- 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** digital network power amplifier delivers efficient Class D audio, flexible input options, and intelligent power management for professional IP broadcasting.

In summary, this **IP Network PA System** 1U network power amplifier with wide‑voltage input, dual priority, and network audio decoding is the ideal choice for schools, hotels, factories, and commercial buildings requiring reliable, energy‑efficient, space‑saving IP audio amplification.