Beyer M55 various versions

So far the following versions have been tested:


M 55 all body chrome plated grey cable that came with XLR.
500Ω balanced


M 55 HN all body chrome plated, grey cable that came with DIN 3 pin.
200Ω
60KΩ?


M 55 HL all body chrome plated, black cable with DIN 3 pin.
500Ω
45KΩ?


They all sound great


Setup:


M 55 - Canford stepup transformer or mic internal autotransformer  - Pleiades  V4 - Realistic Disco mixer mic in - Sennheiser HD580


Impedance was measured with Escort LCR digital meter.