It's my hobby..
it's what I do.
I can fix this.
I recently redone a HD580 to be more like a 650, but cleaner:
HD6xx will be a loaner
I remade a THx00 for more resolve :
Those were last ones I made.
I like the Denon 7200 change the most, but I'm interested in the Sonys to see how they climb.
Initial testing shows I can make the Sony z7m2 more detailed so I just measured and ordered special parts for completion.
Will do a before and after measurements soon.
I am hoping I can elevate these enough to sell my other top closed can which I feel is a top choice and the one to beat for a closed can, the Denon9200.