These were removed after being tested in a system we were upgrading. Though unlikely, it is possible they could have been damaged in the process. Please keep this in mind when bidding as there will be no returns. So far they’ve been 100% working when being reused in other projects. Bid starts low. Please ask any questions before bidding and I will be uploading a lot more of these and similar mics as well as other AV equipment over the next few weeks. Good luck and happy Ebaying! NO INTERNATIONAL SHIPPING.