POWER PER KILO OF SELECTED MONOBLOCS (based on manufacturers' data) Manufacturer Model/Nominal Weight Specific Rating Max Power (J) (kg) (Joules/kg) Systems 300 2.6 115.4 600 2.9 206.9 Broncolor C80/600 2.7 222.2 Prolinca 125 2.0 62.5 250 2.2 113.6 400 2.3 173.9 Elinchrom 250 2.0 125.0 500 2.26 221.2 Bowens Esprit 125 2.2 56.8 Esprit 250 2.9 86.2 Esprit 500 3.4 147.1 Courtenay 150x 2.3 65.2 300x 2.3 130.4 600x 2.65 226.4 Multiblitz Profilite 200 1.2 166.7 Profilite 400 2.1 190.5