Features
- CPU uses ARM Cortex A7@900MHz;
- Audio codec: Supports software codecs, including G.711, G.726, and ADPCM, and supports Audio 3A (AEC/ANR/AGC);
- Standard configuration includes one 10/100M RJ45 network communication interface, supporting LAN and WAN deployment;
- Built-in one-channel network hardware audio decoding module for real-time/timed music playback;
- Sampling rate can be adjusted in the background, allowing users to freely select the highest sampling rate within the LAN for optimal sound quality (supports WAV 8K/16K/44.1K, AAC 16K/44.1K/48K selectable);
- Background hardware resource monitoring displays CPU and memory usage ratios and continuous running time;
- This device supports single-unit and batch remote upgrades via LAN and WAN, facilitating efficient and rapid customer service;
- The volume potentiometer uses a fully sealed dustproof design, permanently dustproof, and noise-free adjustment;
- Employs a wide-voltage PFC circuit, compatible with AC 100V-240V power supplies without being affected by voltage fluctuations;
- Uses a high-efficiency Class D digital amplifier with comprehensive overload, overvoltage, high-temperature, and DC protection circuits;
- Two local microphone inputs with independent volume control;
- One local line input with independent volume control;
- One EMC emergency audio input for priority insertion, equivalent to network signal input;
- One auxiliary audio output interface for expanding external power amplifier;
- One local network volume control function;
- 4.3-inch color touchscreen display with industrial-grade touch operation for human-machine interaction and sensitive touch response;
- Includes one local USB flash drive playback function;
- Features one-way on-demand function, allowing users to access the server software's music library and freely play programs on demand;
- Features multiple operation modes (selectable loop playback mode, play/pause, track selection, previous track, next track, volume adjustment, etc.);
- Includes a password-controlled login interface with options for password and passwordless login, and a factory reset function;
- Features four LED status indicators (power indicator, audio signal indicator, peak reduction indicator, protection indicator) for clear visibility of operating status;
- Built-in three-wire volume control forced-cut output interface, with no limit on the number of volume controls provided the amplifier power is not exceeded;
- Built-in DC24V power output for forced-cut 4-wire volume controllers;
- One short-circuit signal input, which can trigger a local alarm via software settings;
- One short-circuit signal trigger output for driving other linked devices;
- This device has a three-level priority function: EMC and network are the highest priority, MIC1 is the second highest priority, and MIC2 and AUX are the third highest priority;
- Built-in primary/backup switching detection module, supporting switching to backup power input within 0.3 seconds in case of network or power outages or unit failures;
- Equipped with one 100V constant voltage power backup input interface
Application
Connection
Specification
|
Total Harmonic Distortion |
≤0.5% |
|
Wideband Signal-to-Noise Ratio |
≥81dB |
|
Weighted Signal-to-Noise Ratio |
≥86dB |
|
Network Interface |
RJ45 |
|
Network Transmission Rate |
100Mbps |
|
Supported Protocols |
RTP, UDP, TCP/IP, FTP |
|
Audio Format |
MP3/WAV |
|
Audio Mode |
16-bit Stereo CD Quality |
|
Sampling Rate |
8K～48K |
|
Bit Rate |
8K～512Kbps |
|
LINE OUT Output Level |
775mV, 2-pin RCA connector |
|
LINE OUT Output Impedance |
470Ω |
|
AUX input sensitivity |
300mV (unbalanced) |
|
MIC input sensitivity |
10mV (unbalanced) |
|
Standby power consumption |
<10W |
|
Frequency response |
90Hz~15KHz |
|
Output method |
4~16Ω constant impedance output, 70V/100V constant voltage output |
|
Protection circuit |
DC output, overload, over-temperature, short circuit protection circuit |
|
Ambient temperature |
-20℃～60℃ |
|
Ambient humidity |
20%～80% relative humidity |
|
Input power supply |
~220V/50Hz |
|
Dimensions |
485 (W) × 385 (D) × 90 (H) mm |
