... .portable speaker,high fidelity,stereo speaker,cordless receiver,digital signal,education 2.4G Digital Wireless On-Wall/portable Speaker can be ... Break through the previous limitations, adopting most fidelity 64K digital audio sampling ratio and 16bit sample quantization, therefore the ... be adjusted from 40mA -110mA directly under required, the receiver current is lower than 35mA, and the current is ...