R1220 Digital Mixer Frequency Shift Device Feedback suppressor 4 Channel XLR 6.5mm Input for Conference KTV Stage 4 input 1 output
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• Ultra-wide frequency response circuit technology, no loss of sound quality, no metal tail, high-speed suppression of the return sound;
• Digital frequency shift technology, super anti-whistle, sound round and stable, no hair and dry hair and so on;
• Super stability: built-in crystal oscillation, software algorithms, good stability, by the temperature and external interference is very small;
• Customize the audio spectrum according to the application, thus greatly improving the system gain;
• Adaptive full-band feedback suppression, built-in dedicated high-speed floating-point digital signal processor and adaptive feedback (AFC) suppression algorithm can be eliminated without distortion to the maximum whistle;
• Built-in unique distortion-free dynamic noise cancellation function, you can filter out the background and system current noise without distortion, thereby improving the signal to noise ratio and improve sound quality.
• The sampling rate is 48Khz and the frequency range is 40Hz ~ 20kHz.
• Increased acoustic gain: 9 ~ 12dB;
• Sound suppression ratio: 18dB;
• The maximum analog input / output is 1V Vpp;
• 2-way standard XLR input interface 20dB gain adjustment;
• Analog input level overload indication;