mcmental 0 Posted December 4, 2019 evening all, i have the qvis dvr and cameras using the bnc cables, im wondering if there are any cameras with audio i can buy and use please? thanks chris Share this post Link to post Share on other sites
tragic_audio 1 Posted December 10, 2019 There is no issue to transfer audio channel via coax. You can use external mic and connect it to your audio in socket in your dvr. Share this post Link to post Share on other sites
