Alesis AM51 in good condition.
Cardioid Condenser Microphone
The Alesis AM51 is a fixed Cardioid FET condenser with switchable pad and filter and transformer output, and is designed to use as an all-purpose studio condenser. Switches on the AM51 independently enable a pad (-10dB) and high-pass filter (12dB/octave at 75Hz). Requires 48v phantom power.