While the recording industry had made magnetic tape the standard for recording music for release on vinyl, Command's albums were recorded magnetically onto 35mm film. Magnetic sound-on-film recording, using special film stock fully coated with iron oxide, had replaced optical sound-on-film recording in the 1950s when wide-screen and stereophonic sound became standard for Hollywood movies. Light used the width of the film strip to create multitrack recordings, as opposed to the more limited two or three tracks offered by most recording studios at the time; the slightly higher linear speed provided an advantage in analog fidelity and the sprocket-driven film avoided the "wow and flutter" problems associated with tape recording. This enabled Light to record more instruments individually and adjust their audio input levels, as well as their stereo position.
Command test record
Like many other Command records, the Stereo Check Out came in a gatefold cover with extensive liner notes and full technical data inside. Charles Stark narrated both sides, providing both technical details and information about the musical instruments used on the tracks on Side Two.
Side One of this LP consists of turntable tests. An oscilloscope is a useful tool when used in conjunction with these tests:
- Stereo Balance Check
- Left and Right Channel Check
- Volume Reference Check
- Frequency Run Check
- Output Balance Check
- Flutter or Wow Check
- Phasing Check
- Acoustical Check
- Rumble Check
Side Two of this LP consists of musical selections from the Command catalogue:
- Hernando's Hideaway (from Provocative Percussion Vol II)
- Cumana (from Provocative Piano)
- Tenderly (from bongos)
- Enjoy Yourself Cha-Cha (from Pertinent Percussion Cha-Cha's)
- Enoch Light...And His Orchestra A Discothèque Dance...Dance...Dance
- Enoch Light...And The Light Brigade Big Bold And Brassy
- Enoch Light...And The Light Brigade Vibrations
- Enoch Light...Big Band Bossa Nova - The New Beat From Brazil
- Enoch Light...Command Performances
- Off Beat Percussion - Don Lamond and His Orchestra
- Persuasive Percussion
- Persuasive Percussion Vol. 2
- Persuasive Percussion Vol. 3
- Provocative Percussion
- Provocative Percussion Vol. 2
- Provocation Piano Dick Hyman and His Orchestra
- The Man From O.R.G.A.N. - Dick Hyman
- Spanish Guitar - Tony Mottola and his orchestra (1962)
- Grevatt, Ren (Nov 6, 1961). "Record Hunter Displays Sell". Billboard magazine: 15. ISSN 0006-2510.
- Edwards, David, et. al. "Command Album Discography". Album Discographies. Both Sides Now Publications. Retrieved 5 July 2010.
- Rolontz, Bob (Nov 6, 1961). "Sound Record Sales Boom After 3 Years of Stereo". Billboard magazine: 15. ISSN 0006-2510.
- Edwards, David, with Patrice Eyries, and Mike Callahan. "Command Album Discography". Both Sides Now. Retrieved 6 July 2013.