2231 Equalizer Anti-Feedback Audio Performance Stage Conference Effects Processor Noise Reduction Digital Processor 1. Frequency range: 20Hz–20kHz ±0.5dB, 600 ohms 2. Total harmonic distortion: <0.05% (THD+N), 20Hz–20kHz, 600 ohms with equalizer flat 3. Hum and noise (average impedance: 600 ohms, BPF: 20Hz-20kHz): -96dB with equalizer curve flat (0dB) 4. Equalization control: 31 bands, 13 octave 5. High-pass filter: 12dBoctave (20-200Hz x 30dB point) 6. Peak Indicator (LED Display): Red LED illuminates when rear equalizer limit level peak exceeds 3dB on any channel 7. Power requirements: 110-250V 8. Power consumption: 25W 9. Inputs: - Connectors: 14 inch TRS (female), XLR (pin 2 as line) - Type: electronically balancedunbalanced with RF filtering - Impedance: balanced: 40k ohm; unbalanced: 20k ohm - CMRR: >40 dB, typical >55 dB (1 kHz) 10. Output: - Connectors: 14 inch TRS (male), XLR (pin 2 hot) - Type: Impedance balancedunbalanced, with RF filtering - Impedance: 200 ohm balanced; 100 ohm unbalanced - Maximum output level: >+21dBu balancedunbalanced (into 2k hm or greater load) Features: 1. Suitable for radio stationsrecording studioslarge-scale projectslive performances 2. Streamlined system wiring, powerful functionality, user-friendly operation 3. Built-in limiter protects speakers from overload or enables special sound effects processing 4. Switchable +-6dB or +-12dB boostcut range 5. Front-panel bypass switch 6. 4-segment LED ladder display for monitoring output level 7. Signal dynamic range exceeding 108dB 8. 12dB per octave low-cut filter at 40Hz 9. +-12dB input gain adjustment range 10. XLR and TRS inputoutput connectors 11. Frequency response: 10Hz-50kHz