Connector It's from a 70's Italian mic (UMC 7103), a unidirectional condenser microphone. I need to substitute the original jack cable, with a XLR, but i don't know what is this connector (it screws on the mic) enter image description here

  • post a pic of the other side of the smaller part
    – Daniel
    Commented Jul 5, 2016 at 19:36
  • @Daniel there you go
    – Fender
    Commented Jul 5, 2016 at 19:38
  • you need an adapter with a 1/4" female on one side and an XLR male on the other end.
    – Daniel
    Commented Jul 5, 2016 at 19:42
  • just checked Ebay, there are a ton of them on there
    – Daniel
    Commented Jul 5, 2016 at 19:44
  • so basically the adapter will let you plug in the 1.4" from your italian microphone and then you will be able to plug that entire unit into an xlr input
    – Daniel
    Commented Jul 5, 2016 at 19:45

1 Answer 1


Looks very much like a vintage Switchcraft 2501 connector. Note that those were typically used for vintage high-impedance unbalanced microphones. So even if you had a cable with that connector on one end and XLR on the other, it would likely NOT be suitable for a modern low-impedance balanced connection (as you get with typical XLR mic inputs).

Ref: http://www.switchcraft.com/productsummary.aspx?Parent=810

Ref: http://www.angela.com/microphoneconnectorswitchcraftoldstylescrew-on.aspx

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