[Ionescu Niculae]

I soldered red to tip and all others to sleeve like I do with Sennheiser MKE-2s and it worked fine. Actually I find it a bit more powerfull than another Sony ECM-55 I have. Could this be I still need to find that other wire for bias ? Or if it works like this I should leave it ok ? and should I solder ring to sleeve for grounding ? Thank you for your answer !