A:AnswerOnce again, I'll answer my own question. The amp will work with xbox series because old xbox one controller works with xbox series. Correct? One has to use the xbox one controller.
A:AnswerWell asking my son the one whom I bought this headset for when I asked this question he says yes there is a fix to your echo issue. He said and I quote; ' it's called turn your volume down. Your headset speakers are up so loud they can hear you and themselves through the Mic. So make sure the mic isn't too close to the speakers and your volume isn't up too high causing the mic to pick up the speakers sound. If you have the head set with the Amp this is an issue easier controlled with the Amp and volume as well.
