The top-level U87AI microphone is suitable for professional recording studios.

Professional custom-made U87 tube microphone, professional recording studio mic

Advanced U87AI condenser microphone, professional recording studio/singing mic

New Professional-grade heart-shaped directional, U87AI capacitive microphone

NewThe professional modified version C12-JFET condenser microphone Recording mic

New Professional-level DIY U87 large-diaphragm 6H3N vacuum tube microphone

New Professional tube microphone, professional studio tube AK47 microphone

Vintage Neumann U87AI P48 Condenser Microphone, Mic Only - USED