AnyMic/1

• Powered by XLR phantom-power ... no batteries or power supplies needed
• Gold-plated contacts on all connectors

Connect on the backside  whatever electret microphone you like or you have already.
...  in the picture it is a quite small high-quality AnyMic 'cable microphone' from our store:

• 5mm high-frequency low-capacity coax cable
• Gold-plated jacks by Amphenol/audio