An MC step-up transformer casing a transformer 3A55 by DUKANE, which is familiar with Western power amplifiers of KS part number. It is a popular model compared to the WE618B. The gain is a little low, but the soft sound with a sense of fulfillment in the middle range is attractive (Yoichi Murakoshi)
Maintenance information: 2022.7.6 Sound output confirmed
Accessories: none
Main specifications: primary 75Ω, 150Ω, secondary 30kΩ, W150 × H130 × D160mm