Here is the heartbreak: Sony Pictures Home Entertainment has never released a proper, remastered complete series box set in North America. The only official releases were:
The show was produced in standard definition (4:3 aspect ratio, ~480i). True 1080p or 4K upscales do not exist natively. Therefore, "extra quality" refers to:
: Dr. Egon Spengler, the only original member still living at the firehouse, recruits four of his university students to take up the mantle. The Mission