HQsing Digital Processor/Mixer MX-122 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-day Risk Trial (D? I tr? Trong 30 ngày). FREE 24/7 Lifetime customer service as long as item still working (H? Tr? K? Thu? T 24/7 tr? N d? I s? N ph? M). Optical Toslink Cable x 1pc.