HQsing Karaoke Digital Processor PQ-223. PQ-223 is produced for home or business karaoke systems for multi-purpose halls, conferences, and large stages with good sound performance, easy installation, adjustment and savings cost of electricity. It has the ability to adjust the components independently, for realistic and detailed sound. 30-days Risk Free Trial (D? I tr? Mi? N phí trong 30 ngày). FREE 24/7 Lifetime customer service as long as item still working. SNR: Mic: 113dB, Music: 115dB. Frequency response: 20Hz20Khz (+-5dB). Music has 5 PEQ. Output has 7 PEQ. Echo/reverb has 5 PEQ. The microphone has 15 PEQ. Max input level MIC: +14.8 dbu. Max input level Music: +14.8 dbu. Input impedance MIC: 10K Ohm. Input impedance Music: 22K Ohm. Output impedance: 300 Ohm. AD/DA: 192 Khz 24 bit. Supply voltage: AC 110V / 50 Hz +-10%. Dimension: 432 x 235 x 45 mm.