Audio Amplifier (KR-7060 ~ KR-7650)
Highlight Features
IP Public Address Audio Amplifier – KR Series
The KR Series IP Public Address Audio Amplifiers are professional-grade network PA amplifiers designed for centralized IP-based broadcasting systems. With built-in network audio decoding, multi-input flexibility, multi-zone control, and comprehensive protection mechanisms, the KR series delivers stable, high-quality audio performance for commercial, industrial, and public safety applications.
Products Description
- Network audio decoding: Built-in audio decoder with DAC for converting digital IP audio streams into high-quality analog signals.
- Multi-input design: 3 × Line inputs + 2 × Mic inputs (with priority muting) + 1 × network audio input.
- Remote & local volume control: Preset modes for Background Music (BGM), Emergency, and Fire Alarm applications.
- Flexible output options: Supports 100V / 70V constant-voltage (high-impedance) outputs and 16Ω low-impedance output.
- Zone-based audio control: 5 independent output zones with 3-level volume adjustment (device-side control).
- Smart protection system: Automatic standby and protection against over-temperature, overload, and short circuits.
- Advanced cooling: Two-stage temperature-controlled cooling fan system ensures long-term stable operation.
Product Specification
| Model | KR-7060 | KR-7100 | KR-7120 | KR-7260 | KR-7380 | KR-7500 | KR-7650 |
|---|---|---|---|---|---|---|---|
| Rated Power Output | 60 W | 100 W | 120 W | 260 W | 380 W | 500 W | 650 W |
| Zone Control | 5 independent zones, 3-level volume control (adjustable on the device only) | ||||||
| Network | RJ45 Ethernet port (10/100 Mbps), supports TCP/IP / UDP / IGMP protocols | ||||||
| System Expansion | AUX output for connecting external power amplifiers | ||||||
| Audio Formats | MP3 / MP2 (32 kbps – 320 kbps) | ||||||
| Frequency Response | 30 Hz – 18 kHz | ||||||
| Signal-to-Noise Ratio (SNR) | ≥ 88 dB | ||||||
| Total Harmonic Distortion (THD) | < 1% (1/3 rated power, 1 kHz, sine wave) | ||||||
| Power Supply | AC 220 V ±10% | ||||||
| Dimensions | 484 × 330 × 390 mm | ||||||
Typical Applications
- IP-based public address and voice evacuation systems
- Commercial buildings, shopping malls, airports, and railway stations
- Factories, industrial parks, and large warehouses
- Schools, campuses, hospitals, and government facilities
- Integrated emergency broadcast and fire alarm systems
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