Interesting.. I got them from a good friend. He installs pro audio systems in amphitheaters, auditoriums, clubs, movie theaters, etc.
A lot of his distributors work out of other countries for tax breaks and or to save on import costs etc.
Meaning all/most of their online material is inaccessible via american servers, causing any info on their products not to show up when performing a basic search on google without a vpn, apn, ip router/blocker, or OS such as Tor, etc.
When I payed him the $50; he said, laughing; "You are getting one helll of a deal, enjoy them as i did'' Also he did mention something about them being pro audio if i remember correctly
As for the info you provided above ill check it out and get back to you.
I appreciate any help, and sorry about getting kind of off topic there, I was mostly just thinking outloud to understand the mess of thoughts in this brain of mine!
Thanks again!