60's US/Canadian series by the Time Oriole branding.
The series has the banner "For those who dare... The exclusive sound extra" and was built around the recording technique in an era of "re-channeled stereo". The liner notes reads:
"The creed of SERIES 2000 is craftmanship. This product originates through multi-channel recording. No monaural recordings are made at initial sessions. It's our feeling that simultaneous stereophonic and monaural recording produces a compromise. However, when concentrating on recording only three track stereo, one achieves the best possible results. The end product is mixed down from the original multi-channel recording. This enables SERIES 2000 to reach the maximum peak of recording effiency".
The series has had around 200 releases.