Ever seen THAT CD-4? :)

[winopener]

Wonder if somewhere they did also a SQ blank cassette...

 

[Sonik Wiz]

Wonder if somewhere they did also a SQ blank cassette...

I think it stands for Compounded Distortion to the 4th power.

 

[Doug G.]

Same general idea as "Digital Ready" speakers.

Doug

 

[JonUrban]

Requires a Philips Demodulator!

 

[surround.sound.enthusiast]

Oh, that's wacky. You know that someday someone will put one up for auction under the belief that it's a discrete quadraphonic cassette.