Board Thread:S,R,&G/@comment-26391060-20140904185149

copy from a site called nyaa, that they describe content's native source being:

TV source video is by default limited to 1440x1080p. The NHK-BS Premium, BS-NTV, and WOWOW channels are limited to 1920x1080p.

SO i guess they're pretty much those channel's quality.  