The Sony Model ECM-33F
cardioid electret condenser microphone

The SONY ECM-33F

ECM-33 specifications

This microphone was “newly designed” in 1977.

ECM-33 specifications

The SONY ECM-33F

ECM-33 specifications

ECM-33 specifications

The SONY ECM-33F

ECM-33 specifications

Fresh battery

ECM-33 specifications

ECM-33F switch

The battery saver switch.

specs6

ECM-33F

ECM-33 specifications

The SONY ECM-33F

ECM-33 specifications

SONY ECM-33F

Text and illustrations are from the SONY ECM-33F instruction manual,
Number 2-599-077-21 (2), downloadable at the bottom of this page.
Numerous spelling errors have been observed in the scanned text.

ECM-33P cover

Download the ECM-33P Service Manual.
Courtesy of Torben Larsen.

Owner's instruction manual

Download the ECM-33F Owner’s instruction manual.
Twelve pages, one megabyte PDF