Analog audio · declared evidence
Plug-in power is not phantom power.
Check a declared microphone power route before connecting a plug-in-powered lavalier, P48 mic or battery-powered microphone.
Your declared connection
A passive cable does not convert supplies
A lavalier that requires plug-in power is not automatically suitable for a P48 phantom input. A documented converting adapter may supply the correct bias and signal interface, but an ordinary connector adapter does not establish that function.
Check the whole route with power off
Read the microphone power range and current requirement, input supply specification, pinout, and adapter power conversion behavior. Follow manufacturer power-off and discharge instructions before recabling. Do not try unknown combinations to see whether they work.
No universal plug-in-power voltage is assumed. Nor does the label “dynamic” or “ribbon” prove that a microphone tolerates phantom power on every possible cable path. A declared power fit is not a gain, noise or safety certification.