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AEA KU4 Unidirectional Studio Ribbon Microphone

Mfr #: KU4

Dale #: AEA-KU4

Availability: Special Order

This item ships within 5-10 business days and your card will be charged once you complete checkout. This item is not returnable or cancelable.

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Our Price: $4,356.00

Retail Price: $4,840.00

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The KU4 is the only microphone that combines the warmth and sonic ease of a classic RCA ribbon microphone with a unidirectional supercardioid pattern. Need to put a 44 or other ribbon in a particular location, but can't because you need isolation from the rear pickup lobe that every ribbon microphone has? The KU4 is the solution. Find out why the RCA KU3A has been used in all the big Hollywood production studios for decades.

How is the KU4 different?

The KU4 is unmistakeably a ribbon microphone, with a characteristically smooth ribbon sound. Like other ribbons, its lightly-tensioned, ultra low mass ribbon has a frequency response beyond 20 kHz, an accurate transient response, and no upper midrange resonances common to large condenser mics. 

However, having a supercardioid instead of a figure-eight polar response pattern mics sets it apart from other ribbon mics. The KU4's supressed rear lobe reduces the pickup of room ambience and is especially useful when the rear of a figure-eight pattern would pick up undesirable sounds. The KU4's reduced bass proximity effect facilitates closer micing while its low-tuned ribbon will not exhibit bass distortion. These characteristics make the KU4 well-suited for modern studio production.

The Legacy of the RCA KU3A

The KU4 is a re-envisioning of the legendary RCA KU3A, a unidirectional microphone originally designed for the Hollywood movie studios. It combined the smooth ribbon sound of a 44 with a unidirectional pattern, wide sweet spot and reduced bass proximity effect. It became a standard at film studios around the world because it expanded an engineer's range of placement choices. Today, however, the KU3A is a collector's item, and few studios or rental houses own them. AEA is proud to put this microphone back into the hands of modern users.

The KU4 is your ticket to discovering why RCA unidirectional ribbon microphones have been used in professional studios for over 60 years. AEA is honored to play a part in its history, and invites you to listen to the KU4 and claim your part of this legacy.