Harmonai 231 Dual 31-Band 2U Equalizer

The Harmonai 231 is a high-performance dual-channel 31-band professional equalizer in a compact 2U rack-mount design, featuring TRS/XLR balanced/unbalanced I/O, independent 40Hz hi...

$72.55

Model: 231
Category: Stage Accessories
Images: 4 images
Status: ready

Product Brief

Harmonai 231 Dual 31-Band 2U Equalizer

Overview

The Harmonai 231 is a high-performance dual-channel 31-band professional equalizer in a compact 2U rack-mount design, featuring TRS/XLR balanced/unbalanced I/O, independent 40Hz hi...

Price: $72.55
Model: 231
Category: Stage Accessories

Specifications

Parameter	Value
Input Connections	TRS or XLR differential balanced/unbalanced inputs and outputs
Output Modes	Stereo mode or left/right channel summing subwoofer mode selectable
Range Selection	×10 range selection available on both channels
High-Pass Filter	40Hz high-pass filter (low-frequency roll-off) on both channels
Frequency Band Adjustment	Output level of all frequency bands adjustable independently
Crossover Filter	24dB/Linkwitz-Riley filter (professional standard)
Power Supply	220V / 24W
Rack Mount Specification	Standard 2U rack height
Number of Bands	Dual 31-band equalization
Model	231

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

Harmonai 231 Dual 31-Band 2U Equalizer product image

Product Overview

The Harmonai 231 Dual 31-Band 2U Equalizer is a high-performance professional audio signal processing device, featuring dual independent channels each with 31 precisely spaced frequency bands. It supports both TRS differential balanced and XLR input/output connections. Equipped with independent 40Hz high-pass filters per channel, ×10 range selection, and full-band output level adjustment per channel, it integrates a 24dB/Linkwitz-Riley professional-standard crossover filter, delivering precise and reliable audio equalization for live performance, recording studios, conference rooms, and more. Its compact 2U rack-mount form factor fits standard equipment racks.

Input Connections

TRS or XLR differential balanced/unbalanced inputs and outputs

Output Modes

Stereo mode or left/right channel summing subwoofer mode selectable

Range Selection

×10 range selection available on both channels

High-Pass Filter

40Hz high-pass filter (low-frequency roll-off) on both channels

Frequency Band Adjustment

Output level of all frequency bands adjustable independently

Crossover Filter

24dB/Linkwitz-Riley filter (professional standard)

Power Supply

220V / 24W

Rack Mount Specification

Standard 2U rack height

Number of Bands

Dual 31-band equalization

Model

231

Applications

Ideal for professional live sound mixing, studio post-production, conference room audio systems, live sound reinforcement, KTV/entertainment venues, and broadcast studios — anywhere precise audio equalization is required. The dual-channel independent architecture supports stereo and subwoofer summing modes, accommodating diverse audio system configurations.

For detailed product information, quotations, or technical consultation, please contact our professional team — we provide customized audio system solutions.