The one purrin heard and ultrabike took measurements of is mine. I was one of the beta users and I am not sure it's a defective unit or not
I like the Oppo. It has no one amazing stand out quality but it doesn't have a terrible Anomaly to it either, at least to my ears. I don't know what to say other than I will check in with Oppo to do an inspection on my PM1 when I get them back.
Although it is making the rounds to about 5 folks for a week each as part of a loaner program.