Single CD-4 – Pioneer CD-4 Test Record Pioneer – PQX-1011 Vinyl, 7", 45 RPM, Quadraphonic, Promo, Green cover Japan 1974 A1 Signal For Separation Adjustment Of Left Channels (CH.1 And CH.2) A2 Signal For Separation Adjustment Of Right Channels (CH.3 And CH.4) A3 Announcement For Channels And Signal For Balance Adjustment A4 Signal For 30kHz Carrier Level Adjustment B1 Signal For Separation Adjustment Of Left Channels (CH.1 And CH.2) B2 Signal For Separation Adjustment Of Right Channels (CH.3 And CH.4) B3 Announcement For Channels And Signal For Balance Adjustment B4 Signal For 30kHz Carrier Level Adjustment Produced At – Pioneer Electronic Corporation Manufactured By – Victor Musical Industries, Inc.