AKG 451-EB (c. 1973)
Little is documented about the AKG 451-EB outside the company's own period announcements. What the record shows is this. AKG wrote the name as C 451 EB. It was the preamplifier module of the CMS FET modular condenser microphone system - the electronics head that turned AKG's CK series capsules into working microphones.
AKG Equipment Ltd's announcement in Studio Sound (March 1973, p.15) introduced the C 451 EB as a new preamplifier for the popular CMS FET modular system, with bass roll-off built in. A three-position recessed switch selected flat response, a tailored roll-off from 75 Hz, or a tailored roll-off from 150 Hz. The same announcement recommended it for the CK9 "gun" attachment and for boom or handheld use with a pop shield.
The EB later became half of a well-known pairing. When AKG reissued the C 451 B in 2002, its advertising quoted Chris Dietze of Clear Sound saying the new microphone sounded closer to his C 451 EB + CK 1 combination than anything else he had heard. Thirty years on, the EB-plus-CK1 rig was still his reference.
Known specifications, from the 1973 announcement:
- Preamplifier module for the AKG CMS FET modular condenser microphone system
- Bass roll-off switch, three positions: flat / tailored roll-off from 75 Hz / tailored roll-off from 150 Hz
- Recommended for use with the CK9 gun attachment, as a boom microphone, and handheld with pop shield
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