Yate sounds fine on my USB headphones.  However, yesterday, a caller complained that his own voice was echoing back to him when talking to me.  He was on a land line.  I was on yate.  He said that when I disabled my mike, the echoing problem disappeared.  I wasn't paying too much attention to the techs, as the merits of the call were front and center, but I think this is an accurate summary of what happened.
Any thoughts about the echo thing?  This was the first complaint but others might have been too polite to complain.