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Introducing Choir

Choir is a digital signal processor that intelligently learns your venue’s acoustical environment and provides processed choir audio that results in much greater gain before feedback and increased clarity.

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Choir has given us fantastic gain before feedback. It’s the loudest I’ve ever been able to get our choir.  It’s really important both for our live and online experiences that our choir is clearly present in the mix.

With Choir we’ve been able to lower, or a lot of times get rid of our vocal backing tracks completely because of the fullness we are now getting in our live mix.

-Mike Smith | Audio Lead | Prestonwood Baptist Church

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Greater Acoustical Gain

Increased Clarity & Stability

Maintains Natural Tonality

Adapts To Your Environment

Providing sound reinforcement for choir can be one of the most difficult tasks in live audio. Achieving sufficient gain-before-feedback, minimizing stage-to-microphone leakage, and getting the choir “on top of the mix” with clarity are classic challenges that prove difficult to overcome.

Choir reinforcement typically makes use of condenser microphones covering large groups, and is therefore subject to excessive room reverberation, PA system effects, and feedback. The common result is a deteriorated choir mix that is prone to electroacoustic feedback and suffers from poor intelligibility.

Good microphone placement and console equalization can help, but are quite often not enough, and these “solutions” often deteriorate musicality and overall tonality. Choir is a proprietary, adaptive digital audio processor designed to increase the clarity and stability of choir mixes and greatly reduce feedback while maintaining the natural sonic qualities of the choir.

In combination with its use in sound reinforcement, Choir is equally effective for sending processed choir sounds to broadcast and recording mixes.


*Select a series below to see models



Analog variant of our flagship processor allowing for easy plug and play integration into not only new system but also legacy systems.


Dante™ variant of our flagship processor, bringing networked audio capability of Choirflex to reality in Dante™ enabled systems.


Power Supply: External 90-264 V AC at 50/60 Hz, FCC Part 15 Class B, UL62368-1

Power Consumption: 70 VA

Audio Input: 4 channels line-level audio on balanced female XLR connectors, 10kΩ impedance

Audio Output: 4 channels line-level audio on balanced male XLR connectors, 50Ω impedance

Frequency Response: 20Hz to 20kHz +/- 0.2dB

Network: 1000/100 Mbps ethernet (service only) on Neutrik etherCON1000

Dimensions (W x H x D): 482.6 x 88.1 x 338.2 mm (19 x 3.5 x 13.3 in)

Weight: 5.5 kg (12.2 lb), accessories and packaging not included



Specs Sheet