Given it was the mid 1980s, the list of recording gear used was the very best of what was available at the time. A 56‑input SSL 4000 E Series console mated to a Studer A80 24 Track.
EMT plate reverbs were among the many reverb units used on the recording, as well as two of the latest digital reverbs, the AMS RMX 16 and the Sony DRE-2000.
Van Halen’s Jump was the biggest selling single of the 1980s, you could no go anywhere without hearing it on radio or TV. Given it’s extensive use of keyboards…