The first one out of the box , the Tx case wasn't glued down properly (quality control issue) .. PB Tech replaced it. The second one was fine. I wanted to use it with my laptop to record a conference. I was under the mistaken impression that the computer 3.5mm jack would just work. It doesn't. Bought a UGreen USB External Stereo Sound Adapter and all is well and the sound quality is awesome for such a small device.