Teenage Engineering CM-15 Large-Diaphragm Condenser Microphone (USB/Mini-XLR/Mini-Jack)
The CM-15 mic is engineered from a different perspective: to get the best possible sound, and with a built-in pre-amp, built-in battery & phantom power, XLR, 3.5mm and USB-C outputs, and smallest size ..and INCIDENTALLY being the closest to a U47 or anything I've yet heard.
What a bargain! - No power supply needed, no phantom needed, two extra stages of gain built-in, and just slip in your pocket. Buy two for stereo!