... quality with competitive price 2.Plug and play, identify USB automatically, USB Powered and signal directly3.Full-digital processing, ... one control cable with built in sound card driver and amplifer circuit needed, easy to operate5.Support for ... recorders, learning machines, radios and other audio device 6.Simple & fashion design, easy to assemble and disassemble JMDYX-004 FeaturesSpeaker unitsIron ...