Purchase Qty. Reference FOB Price
100-299 Sets US$65.00
300-499 Sets US$60.00
500-999 Sets US$55.00
1,000+ Sets US$50.00
Product Description
130nm digital signal processing chip 4-channel automatic volume control (WDRC) Middle-power output with low distortion Adaptive feedback cancellation Layered Noise Reduction memory function Multi-function button 3 environmental modes Program switching prompt Volume adjustment tone ...