Elinchrom ELB 500 TTL Dual To Go SetELB 500 TTL Dual To Go Set The ELB 500 TTL Dual To Go is the perfect set to use with total asymmetry. With two independent flash heads, the unit offers a wide variety of lighting possibilities. Combined with the TTL* and HSS* feature, its effortless to use while delivering exceptional high end results. The ELB 500 TTL is an incredibly portable and powerful battery pack combining 500Ws of power with a feature set that includes TTL, Manual mode and High