IP Controller KR-707 (4 Channel)

Highlight Features

IP Controller (4 Channel) – Series KR

The KR Series IP Controller (4 Channel) is a multi-channel network audio control unit designed for advanced IP public address systems. With four independent IP audio input channels, flexible control interfaces, and integrated power management, it enables centralized control, routing, and automation across complex PA networks.

Products Description

• 19-inch rack-mount design: Standard 1U height (44 mm), suitable for standard rack cabinets.
• Static IP configuration: Maintains a fixed network address, independent of DHCP.
• High-quality audio decoding: Supports MP3 / MP2 (32–256 kbps adaptive), delivering CD-equivalent audio quality.
• Multi-channel architecture: Four independent IP input channels, each with its own IP address and decoding capability.
• Integrated audio routing: Supports microphone, line-level, and network audio inputs.
• Auxiliary power control: Built-in AC power outlet with remote on/off control via network.
• Control interface: Multiple dry-contact relay outputs for triggering and controlling external devices.

Product Specification

• Model: KR-707
• Audio Inputs:
  • 1 × Mono Mic input, 6.3 mm jack (10 mV)
  • 1 × Line input, RCA (1 Vp-p)
  • 4 × independent RJ45 input ports, each with its own IP address, supporting TCP/IP transmission and independent audio decoding
• Audio Output: 1 × RCA stereo output (1 Vp-p)
• Auxiliary Power Supply Support:
  AC 220 V outlet (max. 10 A per outlet, total power up to 2000 W) for external amplifiers/devices; remote on/off control via network
• Control Interface: 4 × dry-contact relay outputs for triggering/controlling external devices
• Network: RJ45 (10/100 Mbps), supports TCP/IP / UDP / IGMP protocols
• Frequency Response: 20 Hz – 20 kHz
• Audio Formats: MP3 / MP2 (32 – 320 kbps)
• Signal-to-Noise Ratio (SNR): ≥ 80 dB
• Line Input SNR: ≥ 95 dB
• Mic Input SNR: ≥ 82 dB
• Power Supply: AC 220 V ±10%
• Dimensions (W × D × H): 485 × 250 × 44 mm
• Weight: 5.5 kg
• Construction: Premium polished aluminum front panel

Typical Applications

• Centralized control of multi-zone IP public address systems
• Independent routing and scheduling of multiple IP audio sources
• Emergency broadcasting and fire alarm audio control
• Automation and triggering of external PA equipment
• Large buildings, campuses, industrial parks, and transportation systems