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The Power Acoustics EQ 231 belongs to the family of stereo graphic equalizers intended for sound reinforcement processing: a simple, visual, and immediate approach to correct a sound diffusion, adapt a system to a room, or refine a source. Its 19-inch, 2-unit format makes it a natural choice to complement a rack with processors, compressors, or amplifiers, while maintaining quick adjustment ergonomics. In an audio chain, it is typically placed between the console and amplification (or active speakers) to directly influence the overall frequency balance or a dedicated bus.
This equalizer is aimed at users seeking fine frequency correction without complexity: sound providers, DJs, bands, associations, multipurpose rooms, places of worship, concert bars, as well as hardware-oriented home studios. In live settings, it helps limit problematic frequencies (room resonances, harshness in the upper midrange, overwhelming bass) and improves intelligibility. In fixed installations, it assists in adapting the diffusion to the room's acoustics. In hybrid studio contexts, it serves to color or balance a mix, headphone return, or monitoring bus with a more "tactile" approach than a plug-in.
With its 2x31 bands, the EQ 231 allows intervention on very targeted areas of the spectrum, with correction amplitude suited to sound reinforcement needs. This is especially useful to attenuate a frequency that "feeds back" (howling) or to compensate for speaker and room imbalances without degrading the overall signal. The 20 mm faders provide immediate reading of settings and quick handling during soundchecks.
On stage or in the control room, decision speed matters. The adjustable output level (+12/-12 dB) helps maintain a coherent gain structure and avoid surprises when inserting into an existing chain. The signal level indicator (steps at -10 dB, 0 dB, +10 dB, +17 dB) allows quick visualization of headroom before saturation. Dedicated indicators for the low-cut filter and bypass facilitate status monitoring, handy when switching between active correction and instant comparison.
The 50 Hz low-cut filter (12 dB per octave) per channel is a simple and effective asset to clean up vibrations, handling noise, rumble, and excessive infra frequencies that consume headroom. In sound reinforcement, this often improves clarity and relieves amplification, especially on compact systems or in resonant rooms.
The EQ 231 offers balanced XLR inputs and outputs as well as unbalanced 6.35 mm Jack inputs and outputs. This versatility simplifies integration with consoles, matrices, processors, interfaces, or active speakers, whether using balanced wiring (more robust against interference over long distances) or unbalanced wiring for short connections and lighter equipment.
