Le Kim Thach of KT Audio last set up and install od 2022 for the owner of the multi-driver horn speaker system with GOTO 505TT for low mids, GOTO 370TT for high mids, ALE 1250 for treble, 4x Altec 416 for bass connected to KT Audio four-way passive crossover and driven by KT Audio 845 Zeus Black monoblocks, with Microseiki 1500 Ortofon SPU analog and Esoteric CD – DAC digital front ends.