AEA KU4

MFR# KU4
AEA KU4
Unidirectional ribbon microphone based on the classic RCA KU3A
Ships directly from the manufacturer This item ships directly to you from the manufacturer. To ensure that the manufacturer currently has stock, please chat, call or email for the latest availability status.
  • Free shipping to the lower 48 states for online orders.

    50% off shipping outside the US and to Hawaii and Alaska.
    Free Shipping (USA)
  • Our friendly and knowledgeable sales team is here to support you before, during and after your purchase.Free Tech Support
  • We add an additional year of coverage for additional peace of mind.Free Extended Warranty

$4,840.00

$4,356.00
24-month 0% financing available with the Vintage King Credit Card

EASY PAYMENT AND FINANCE OPTIONS

At Vintage King, we make it easy to get what you want and pay for it however you like best. Take a look at our convenient payment, financing, and leasing options below. For questions or to learn more, just give us a call at 888.653.1184 or contact our Sales Team.


VINTAGE KING CREDIT CARD

Apply today for the Vintage King Credit Card and take advantage of exclusive promotional financing offers. Now it's even easier than before to get the sound you've been dreaming of. Hurry, our limited-time offers won't last forever. Apply now!


PAYPAL CREDIT

Get 6-month, 0% interest when you spend $99 or more with PayPal Credit®, a convenient and secure payment method designed for purchasing on the web or over the phone. As a credit account, PayPal Credit® provides you with the flexibility to purchase without using your credit card. PayPal Credit® does not require a lengthy application process, offers "zero fraud liability" protection, and offers flexible repayment options. Learn more.


AMAZON PAYMENTS

Buy what you want, and get on with your life. When you login and pay with Amazon, say goodbye to long checkout processes and missed mobile taps. (Please note that Amazon.com gift cards entered into your Amazon.com account cannot be used when making purchases with Amazon Payments on third-party websites.) Learn more.


FINANCING AND LEASING

Building your dream studio or looking to make a long-needed upgrade? We can create financing and lease options to fit nearly any budget. We have relationships with several reputable financing institutions that can keep your cash flow intact, while helping you get the gear you need right now. Equipment leasing lines are another option, giving you the chance to build up your inventory of income-producing equipment — after all, we believe that equipment should pay for itself. Whatever your unique needs, together, we can come up with a strategy that makes solid business sense for you. Contact our Sales Team to learn more.

contact an expert

  • (888) 653-1184
  • Chat Offline
  • Email Us
Description

The AEA KU4 celebrates the legendary RCA unidirectional KU3A, a high sensitivity microphone designed for the Hollywood movie studios.   Also known as a M-10001 for its manufacturing number, it was RCA’s most expensive ribbon microphone.  Fewer than 600 were ever manufactured.

What made the KU3A special?  It combined the smooth ribbon sound of a 44 with a unidirectional pattern, a wide sweet spot and less proximity bass boost.  It expanded an engineer’s range of placement choices and became a standard at film studios around the world.

Although condenser mics became the new standard by the end of the 1960s, ribbon mics are still appreciated today by experienced music recording engineers. However the KU3A is a rare microphone, a collector’s item, and few studios or rental houses own them.  Opportunities to work with a good KU3A are limited.

We are proud to expand your opportunities with the AEA KU4 featuring an RCA ribbon, interchangeable KU3A parts and consistent performance.

Features

  • Contemporary realization of the RCA KU3A classic
  • Supercardioid pattern for excellent rear rejection
  • Reduced proximity effect
  • Smooth, high-bandwidth frequency response
  • Authentic New Old Stock RCA ribbon material
  • High-quality anodized & nickel-plated finish
  • Custom AEA transformer, neodymium magnets
  • Consistent Quality
  • Field-tech replaceable ribbon assembly
  • Hand-crafted in Pasadena, California

How is the KU4 different from other ribbon microphones?
The KU4’s suppressed rear lobe is useful when the back of a figure-of-eight would pick up undesirable sounds.  The KU4’s reduced proximity bass boost facilitates closer micing and its low-tuned ribbon delivers solid, undistorted bass.  These characteristics make the KU4 well suited for modern studio production.

Its lightly-tensioned, ultra low mass ribbon has a frequency response out to 40 kHz and fast, accurate transients.  There is no upper midrange ringing common to large condenser mics.  The KU4’s ribbon is well protected and its field-tech replaceable pole piece and ribbon assembly is a real convenience if an accident occurs.

The KU4 is your ticket to discovering why the KU3A has been part of high-end studio life 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.

Specifications

  • Operating Principle: Velocity microphone
    • Frequency Response: Below 30 Hz to above 20 kHz
    • Maximum SPL: 140 + dB SPL above 200Hz for 1% third harmonic
    • Output Sensitivity: 2.8 mV/Pa into unloaded circuit
    • Output Impedance: 300 Ω nominal
    • Recommended Load: 1.2 KΩ or greater
    • Phantom power: Not required or recommended
    • Polarity: Pin 2 high for positive pressure at the front of the microphone.
    • Connector: XLR-3M wired to a 1.5 meter captive cable
  • Off Axis Response
    • Polar Pattern: Supercardioid
    • Relative Output at 180° (dB): -12
    • Angle of Maximum Rejection: 135°
  • Transducer element
    • Ribbon Thickness: 1.8 microns ( .0000018 meter ) of pure aluminum
    • Ribbon Width: 0.082” (2.1 mm)
    • Ribbon Length: 1.25” (28.6 mm)
  • Accessories
    • Included: Custom storage/shipping case, stand adapter, manual and
    • attached 1.5 meter microphone cable
  • Limited Warranty
    • Three years parts and labor, shipping not included.
Technical Specifications

Additional Information

Condition New
Package Contents Case, stand adapter, mic cable
Length 12.7 in
Diameter 3.8 in
Unit Weight 7 lb
Transducer Type Ribbon
Polar Pattern Super-Cardioid
Number of Microphones Single Microphone
Impedance Nominal: 300 Ohms
Frequency Range 30 Hz - 20 kHz
Sensitivity -51 dBV/Pa (2.8 mV) into unloaded circuit
Max. SPL 140+ dB (1% third harmonic > 1 kHz)
Reviews

Be the first to review this product

Write Your Own Review

Only registered users can write reviews. Please, log in or register

Q & A
Testimonials

Have some questions about this item?

When it comes to getting the best gear, your tastes are probably pretty particular. Vintage King can help answer any and every question to help you make the right decisions for your sound. Fill out the form below and we'll be in contact with you shortly.

Free Shipping in the USA and 50% Off International Shipping! See terms.

* Required Fields