rega elex r burn in?

So let me be as detailed as possible.

Four years ago I got a sweet deal, I think $650 on ebay for a used rega elexr. I was coming from a cambridge audio am10 so it was a huge upgrade for me. At the time I had a schiit modi dac and running it all into a pair of older klipsch tangent 40 speakers with basic cables and ancillary components.

I loved the sound of that amp and speaker combo, every good thing you read or hear about what makes rega amps good and specifically the elex r good was bang on and in full force.

However my wife and i had a fire at that house which totaled everything damn near and we moved.I ended up buying a couple marantz amps ,the 7005 and the 6006 over the intervening years and was fairly happy. Fast forward to now and as some might know basically all online dealers are blowing out the elex r for $500 off ,so i bought one.

Well its exactly like i remember except for one thing, the midrange seems overly muffled to me.

Now my companion pieces are a bit different,

Klipsch rp600m
the same schiit dac, Survived the fire.
And some similar basic interconnects and cables.

My rooms a bit different too,whereas before i had my set up in a living room with about 25x10 ft dimensions.
now my listening room is my wife and i's bedroom at about 13x13. Also because of need my speakers are sitting close to the rear wall, which i have noted with my 6006 ups the bass a bit.

Anywho im not really asking about room set up because we're moving again in a few months and i'll finally have a dedicated listening room,more im asking about amp burn in and peoples experience that have had the elex r.

Like i said the midrange seems to be muffled a bit almost recessed slightly, kinda like vocals are sitting back in the soundstage where the instruments are up front obscuring them. I dont remember that being the case with the used one i bought.

It's funny because ive heard the rega io and brio from new and they dont seem to suffer this but ive read reviews of the rega ellict r and people mention something similar to what im hearing with the elex r. Reviews on the ellict r seem to say that 200 hours seem to open it up.

Anyway any help from rega owners would be awesome and help to avail my fears about it.Because as it sits it sounds 80/85% of the sound that i remember from the used one and it makes beautiful music and is built like a tank and id hate to return it.

oh i forgot i work a lot and currently have about 15 hours on it and have not really noticed a sonic change at all in that time.