Thanks interesting anecdote confirming my experience...
Here’s a story for you all regarding the room. I have my listening room which is quite large but has dormers. I had some corner traps and a few absorption panels on the front wall behind the speakers. Now my shop is 30x30 with a drywall ceiling finished in textured spackling. The walls are insulated and covered with perforated Masonite. That makes the shop hemianechoic (mostly). When I sold my Thiel speakers a couple of years back I set them up in the shop with a cheap little bluetooth amp so the buyer could audition them before purchase. The Thiels sounded amazing in the shop. I got sick to my stomach because they sounded so good. This was nuts. My first thought was cancel the sale but the buyer was already on the way. I was ready to move my stereo to the shop until my wife talked me off the ledge. So I went to work on my room. It took me a couple of months, but I got the room to sound much, much better. Mainly I had to work on the sloped ceilings but also put absorbers- bass traps in the dormers. The last issue is signal to noise. The diffusers and absorbers actually helped with that too. Still, if I had room in the shop…