Harmonai 1231 Professional Dual 31-Band 3U Equalizer image 1

Harmonai 1231 Professional Dual 31-Band 3U Equalizer — High-Precision Audio Signal Conditioning

The Harmonai 1231 is a professional dual 31-band 3U equalizer with balanced/unbalanced I/O, 20Hz–20kHz frequency range, 115dB dynamic range, and <0.005% THD—ideal for precision aud...

$103.33

Model: 1231
Category: Stage Accessories
Images: 4 images
Status: ready

Product Brief

Harmonai 1231 Professional Dual 31-Band 3U Equalizer — High-Precision Audio Signal Conditioning

Overview

The Harmonai 1231 is a professional dual 31-band 3U equalizer with balanced/unbalanced I/O, 20Hz–20kHz frequency range, 115dB dynamic range, and <0.005% THD—ideal for precision aud...

Price: $103.33
Model: 1231
Category: Stage Accessories

Specifications

Parameter	Value
Input Impedance	Balanced 40kΩ, Unbalanced 20kΩ
Output Impedance	Balanced 200Ω, Unbalanced 100Ω
Maximum Input Level	>+21dBu (balanced or unbalanced)
Frequency Range	20Hz–20kHz (+0.5dB / –1dB)
Dynamic Range	109dB / 115dB
Signal-to-Noise Ratio	90dB / 97dB
Total Harmonic Distortion (THD)	<0.005%
Channel Isolation	>90dB
Power Supply	220V, 24W

Service Support

We support project consultation, model recommendation, bulk purchasing and catalog delivery for retail, multipurpose halls, conference rooms and live events.

Business hours: Monday to Friday 09:00 - 18:30
Inquiry channels: phone / email / website form
Tip: share budget, quantity and use scenario in advance

Professional Dual 31-Band 3U Equalizer product image

Product Overview

The Harmonai 1231 is a professional dual 31-band 3U equalizer, engineered for high-demand audio systems. Each channel features 31-band precision graphic equalization covering the full 20Hz–20kHz spectrum, and supports both balanced and unbalanced input/output modes, enabling flexible integration with mixers, power amplifiers, and digital audio processors. Its standard 3U rack-mount form factor ensures compatibility with professional installations in live venues, recording studios, conference rooms, and broadcast facilities.

Input Impedance

Balanced: 40kΩ, Unbalanced: 20kΩ

Output Impedance

Balanced: 200Ω, Unbalanced: 100Ω

Maximum Input Level

>+21dBu (balanced or unbalanced)

Frequency Range

20Hz–20kHz (+0.5dB / –1dB)

Dynamic Range

109dB / 115dB

Signal-to-Noise Ratio

90dB / 97dB

Total Harmonic Distortion (THD)

<0.005%

Channel Isolation

>90dB

Power Supply

220V, 24W

Typical Applications

Widely used in professional sound reinforcement (live venues, theaters, conference centers), recording & post-production (studios, radio stations), public address systems (schools, hotels, malls), and digital audio processing chains for precise band-by-band adjustment and signal optimization—meeting diverse requirements from live sound to fixed-installation environments.

Contact the Harmonai professional team for detailed technical specifications, application support, or bulk pricing inquiries.