AEA KU4 Unique Passive Ribbon Microphone with Supercardioid Pattern | Free S/H from Atlas Pro Audio

Brand New
$4,999
Free Shipping
As low as $162/month with
Watch this listing to get price drop alerts
Shipped From
Atlas Pro Audio
Lakeland, FL, United States
332
Sales
600+
Joined Reverb
2015
Preferred Seller
Quick Responder

Find More on Reverb

Sell Yours NowWhat is this?Anyone can sell on Reverb. List your item today to get it in front of thousands of eyes, quickly and easily.
Reverb Protection

Buy with Confidence – Reverb Protection has you covered

  • Live support from an expert team of musicians
  • Simple and straightforward returns
  • A safe community for finding the gear you want

About This Listing

  • Unidirectional (supercardioid) pickup pattern
  • Reduced proximity effect and room ambience
  • Extended top end with classic ribbon smoothness
  • Modern, consistent version of the RCA KU3A
"It’s nice to have a consistent, wonderful copy of the best originals out there that leaves nothing to be desired."

– Greg Curtis / The Bridge Recording

The Supercardioid Ribbon

The KU4 has the unmistakable characteristics of a smooth ribbon sound, yet it is uniquely different. 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. Having a supercardioid instead of a figure-eight polar response pattern mics sets it apart from other ribbon mics. The KU4's suppressed 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 miking, while its low-tuned ribbon does not exhibit bass distortion. These characteristics make the KU4 well-suited for the modern studio. It is currently the only supercardioid ribbon microphone in commercial production.

The Legacy of the RCA KU3A

The KU4 is a re-vision of the legendary RCA KU3A, a unidirectional microphone originally designed for the Hollywood movie studios. Also known as the “10001” (for its RCA manufacturing number), it was RCA’s most expensive ribbon microphone and fewer than 600 units were ever manufactured. The KU3A combined the smooth ribbon sound of a 44 with a unidirectional pattern, a wide sweet spot, and reduced proximity bass boost. Expanding an engineer's range of placement choices, it became a standard at film studios around the world. Today, however, the KU3A is a rare collector's item, and only a handful of studios or rental houses own them. The few lucky owners of vintage KU3As in great condition like Grammy-winning producer/engineer Kevin Augunas (Sound City Studios) treat their mics as little treasures. Original KU3As are notorious for their sonic inconsistencies due to production tolerances, so with the KU4, we at AEA engineered the microphone from the ground up in order to recreate this seminal design while ensuring flawless consistency from unit to unit. 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.

Ribbon Talk

The KU4 utilizes a medium sized ribbon unlike all other AEA mics. While AEA’s Large Ribbon Geometry TM design offers advantages like extended bass response and maximum SPL level, the KU4’s shorter and narrower ribbon is characterized by a unique upper midrange presence that is particularly interesting for vocals and acoustic stringed instruments. Because of the shorter ribbon, the KU4 is much more similar to the venerable RCA 77 type microphone rather than the RCA 44. By comparison to the 77, the KU4 has a slightly longer ribbon, a fixed polar pattern, and a more natural sounding unidirectional mode.

We are authorized AEA dealers. This item will ship factory fresh from AEA. 

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.

Product Specs

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Brand
Model
Categories
Made In
  • United States
Electronics
Polar Pattern
Wired/Wireless
Microphone Type

Reviews of this Shop

332
;

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Carbon-Offset Shipping

Your purchases also help protect forests, including trees traditionally used to make instruments.

iOS app store button
Android play store button