100V

IT-20, 30, 33, 35, 40, 60, 110, 115, 130, 250TW, 350/EN, 400TW

Low-impedance

DH-10, IT-250TW, KU-516, NR-10M,

NR-15KS, NR-18KS, NR-20KS, NR-22KS, NR-24KS, NR-254KS, NR-25KS, NR-33KS,

NR-35KS, NR-40KS, NR-60KS, RUS-5,

UHC-30

Hoorn speakers

IT-100TW, IT-250TW, IT-350/EN, IT-400DTM, IT-400TW

EN-54 speakers

IT-15EN, IT-32EN, IT-350/EN

Active

IT-130AK, IT-400DTM