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Rare!!! Western Electric 639A 1930s Birdcage Mic

Rare!!! Western Electric 639A 1930s Birdcage Mic

£959
49/100 deal score

Above market: £959 is 3% above the £935 median of 9 used Western Electric Altec 639A listings seen in the last 90 days (typical range £832–£1,169).

Very GoodReverb1d agoLocal pickup available

Sold by

P

Paul's Gear Depot

View on Reverb

Details

First Seen
24 October 2026
Last Seen
26 October 2026
Times Seen
4

About this listing

Rare!!! Western Electric 639A 1930s Birdcage Mic is a used item in very good condition, listed on Reverb. The asking price is £959. It is offered by Paul's Gear Depot through Reverb. Local pickup is available. It is in our Microphones category. 9 similar listings have a median asking price of £935. Used Gear Hunter first saw this listing on 24 October 2026 and last saw it on 26 October 2026. It has been seen 4 times in our scans. Prices are converted from the seller's currency when we scan the listing, so the amount you pay may differ slightly. The seller sets shipping, and import duty or VAT may apply, so check the final cost and the item's details on Reverb before buying.

From the seller

639A is a Cardioid Directional Microphone The 639-type Microphone is a general purpose magnetic mic­rophone with directional character­istics which are selectable by means of a switch. The three basic patterns available are non-directional, figure eight, and cardioid. Sensitivity The 639A open circuit output level is 84 dB below 1 volt/dyne/cm², 64 dB below 1 volt/10 dynes/cm². Power Output Level –56 dBm for a sound pressure level (SPL) of 10 dynes per square centi­meter, or –76 dBm for 1 dyne per square centi­meter when the micro­phone is terminated with a resistance equal to its internal impedance. Experience indicates that the sound pressure pro­duced at conversa­tional level three feet from a micro­phone ap­proaches 10 dynes/cm². This beautiful mic sounds amazing, and has been housed in an upgraded bird cage, as unfortunately with a mic that is approximately 90 years old, the cages do suffer from wear and tear... Reach out if you have any questions...