Mllump
New Head-Fier
I’m not a big burn-in guy, but after I received my 2020 XC’s, the very first time I listened to them I was surprised how much body they seem to lack. And literally, no joke, the very next time I put them on they filled out and had a good body on the low end and a full range for both balance and richness. It literally was like something clicked. This was not after hours of white or pink noise. So, I would just say let them run and warm up just a bit and then try them again with your amp of choice and see what you think.