Bought in 2023 on reverb. Used a couple of times. Very good condition.

Small diaphragm condenser mic.

Shure SM81 Small-diaphragm Condenser Microphone Features: Small-diaphragm condenser microphone with ruler-flat frequency response Industry-standard acoustic guitar mic — just point it at the 12th fret for instant album-ready sound Also excels on other acoustic instruments and as drum overheads Uniform cardioid pickup pattern offers exceptional isolation with minimum off-axis coloration Ultra-smooth response curve ensures accurate sonic reproduction Exhibits low noise and high output, plus a negligible level of distortion over a wide range of load impedances Low RF susceptibility mitigates radio interference 3-position low-frequency response switch (flat, 6dB, or 18dB/octave roll-off) minimizes noise and proximity effect Lockable -10dB pad for capturing extra-loud sources without altering your frequency response Durable vinyl-coated steel construction Field-usable in an infinite range of temperature and humidity conditions