Description
Tired of being stuck with aging analog paging systems that can't reach new buildings or integrate with modern IP networks? The Bogen Nyquist NQ-GA400P 2-Channel AoIP Gateway gives you a simple, cost-effective bridge between analog audio equipment and today's IP-based paging, intercom, and audio distribution platforms.
This compact PoE-powered device encodes analog signals for network transport and decodes IP audio back to line-level outputs-perfect for feeding existing amplifiers, connecting remote zones, or linking legacy systems without a full rip-and-replace. Whether you're expanding a Bogen Nyquist E7000/C4000 setup or adding flexible audio routing to a third-party SIP or multicast environment, the NQ-GA400P delivers clean, reliable performance with minimal hassle.
The Telecom Spot Expert Review
At The Telecom Spot, we consider the NQ-GA400P one of the smartest "glue" pieces in modern audio-over-IP deployments.
What we love most: its true standalone capability. You can drop it onto any 10/100 network, power it via standard PoE, and use it as a line-out endpoint for third-party SIP servers or multicast streams-no full Nyquist controller required. The dual balanced I/O plus Form-C relays give you flexible triggering options (think zone activation, amp muting, or event signaling) without extra hardware.
Audio quality stays excellent-20 Hz-20 kHz frequency response with low distortion-making it suitable for both clear voice paging and background music distribution. Setup is straightforward through the web interface, and the compact size means it fits almost anywhere (rack-mount kits available).
Expert Take: If you have legacy amplifiers or preamps you want to keep but need to extend audio across buildings or integrate with VoIP paging, this gateway is a budget-friendly winner. It avoids the complexity (and cost) of full IP amplifiers while future-proofing your investment. We've used it successfully to link older 70V systems to new Nyquist zones-highly recommended for hybrid installations.
Pros
- True PoE power (IEEE 802.3af) - no extra outlets needed
- Dual independent channels with balanced I/O for maximum flexibility
- Form-C dry contact relays for easy device triggering
- Standalone mode works with third-party SIP/multicast systems
- Compact, reliable build with excellent audio specs
Cons
- Limited to two channels (for larger jobs you may need multiples or higher-channel solutions)
- Requires basic network knowledge for optimal multicast/unicast configuration
Key Features
- Dual-Channel Design - Two balanced line-level inputs and two balanced line-level outputs let you encode and decode audio independently.
- PoE Powered - IEEE 802.3af compliant; runs off standard PoE switches or injectors for easy installation.
- Form-C SPDT Relays - Two 2-amp dry contact relays activate automatically when signal is present on the corresponding output-great for controlling amplifiers or other devices.
- Standalone Capability - Works independently or within full Nyquist systems; functions as a line-out audio endpoint for third-party SIP or multicast setups.
- Flexible Streaming - Supports unicast or multicast audio streams in multiple codec formats.
- Wide Frequency Response - 20 Hz - 20 kHz ±0.25 dB with low THD+N for clear, natural-sounding audio.
- Compact & Durable - Small footprint (5.32" L x 5.5" W x 1.7" H) with status LEDs and robust protection circuitry.
Technical Specifications
- Audio Inputs/Outputs: 2 x balanced line-level inputs, 2 x balanced line-level outputs (3.5mm Phoenix 3-pin headers)
- Relays: 2 x Form-C SPDT, 2-amp dry contact
- Network: 10/100 Ethernet, RJ45, IEEE 802.3af PoE Class 1
- Frequency Response: 20 Hz - 20 kHz ±0.25 dB
- THD+N: < 0.5% (typical)
- S/N Ratio: 80 dB (20k BW)
- Power: PoE or optional 48-56VDC 1A barrel jack
- Dimensions: 5.32" L x 5.5" W x 1.7" H
- Weight: Approx. 4 lbs
- Operating Temperature: -15°C to +40°C
- Compliance: UL 62368-1, FCC Class A
- Accessories (sold separately): NQ-RMK01 / NQ-RMK02 rack mount kits, PS4815W power adapter (if PoE unavailable)