Personnel
- Billy Cobham - drums, percussion, production
- Jan Hammer - electric and acoustic pianos, Moog synthesizer
- Ken Scott - recording and re-mix engineering
- Additional personnel on "Quadrant 4", "Taurian Matador", "Stratus", and "Red Baron"
- Additional personnel on "Spectrum" and "Le Lis"
- Joe Farrell - soprano and alto saxes, flute
- Jimmy Owens - flugelhorn, trumpet
- John Tropea - guitar on "Le Lis"
- Ron Carter - acoustic bass
- Ray Barretto - congas