AEA Microphones KU5A Supercardioid Ribbon Microphone

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SKU: # 700137
Model: #


Your Price: $1,525.00 CDN



The supercardioid KU5A breaks new ground in ribbon technology with its acutely focused directionality that rejects bleed from other instruments, room reflections, and loud ambience in the studio and on stage.

As a near-field ribbon designed for close range recording, the KU5A delivers the low-end heft and pronounced midrange one expects of AEA ribbons and with moderate, manageable proximity effect. Vocalists can sing directly into the grill of the KU5A, as its interior components are the most protected of any in the AEA lineup.

The active KU5A comes complete with a custom transformer and JFET electronics. It features the same custom transformer as the A440, R84A, and NUVO ribbon mics, providing greater output, less audible noise, and stable impedance. This allows for consistent frequency response and greater flexibility with different preamps, including those within audio interfaces. The boosted output of the KU5A is beneficial when recording quiet sources like vocals and soft acoustic guitars, and the active circuitry prevents noise interference. The KU5A operates with standard 48-volt phantom power.


  • Supercardioid polar pattern that rejects room tone and instrument bleed

  • Detailed, extended top end with ribbon smoothness and warmth

  • Supreme durability for close-range, outdoor, and live use

  • Active electronics and custom transformer optimized for all preamps

  • Front address design with built-in yoke is simple to position

  • Integrated high-pass filter switch reduces proximity effect at close-range

  • Matte black finish is discreet on camera


Operating Principle: Pressure gradient transducer
Directional Pattern: Supercardioid
Frequency Range: < 20 Hz to > 20 kHz
Maximum SPL: 135 dB SPL (1% third harmonic > 1 kHz)
Sensitivity: -43dBv (at 1 kHz, no load)
Output Impedance: 92 Ω broadband
Load Impedance: 1.0 kΩ or greater
Phantom power: Requires 48V Phantom Power
Polarity: Pin 2 high for positive pressure at the front of the microphone
High-Pass Filter: 6dB/Octave Shelf at 283hz

Off Axis Response:
Relative Output at 180 degrees: 12dB
Angle of Maximum Rejection: 135 degrees

Transducer Element
Material: Pure aluminum corrugated ribbon
Thickness: 1.8 m
Width: 0.55 in (1.4 cm)
Length: 1.175 in (2.9 cm)

Microphone Dimensions:
Height: 15 in (38.1 cm)
Width: 3.9 in (9.9 cm)
Weight: 2 lb 9.8 oz (1.19 kg)

Connector: XLR-3M wired to a 3 meter captive cable

Accessories Included: Storage case, user manual

Instant Classic!2 of 2 customers found this review helpful

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Product ExperienceI own it
Closest StoreOttawa, Ontario
This mic is insanely good! The rejection is like an sm7b, but the clarity is like a high end condenser, but with that smoooooooth ribbon mic sound, yet not dark and virtually no sibilance. Instant classic!
Posted by Russell on Apr 12, 2019
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Never Gonna Give You Up - Rick Astley - not FUNK cover feat Reeve Carney!!
Introducing the AEA KU5A Supercardioid Ribbon Microphone

Protect your investment with the Long & McQuade Performance Warranty.

Warranty can be a very important factor when making a buying decision. Because repairs can be very expensive in terms of parts and labour costs, manufacturers usually only provide one year limited warranties that generally only cover items that malfunction due to a manufacturer’s defect. With an important purchase such as a musical
instrument or piece of studio gear, however, many people want to have the peace of mind in knowing that their investment will be protected should the product no longer be performing at 100%.

Because of this, Long & McQuade provides our customers with a FREE one-year Performance Warranty on most of our products. The Long & McQuade Performance Warranty supplements the manufacturer’s warranty to ensure that our customers receive complete “no hassle” warranty coverage within their first year.

How does the Long & McQuade Performance Warranty differ from most manufacturers' warranties?

Performance Guarantee - normal wear and tear is covered, so your product will be performing as well as the day you purchased it for the entire duration of the coverage.

Product Replacement - if your product cannot be fixed or costs too much to fix, we will replace it with the equivalent model for no additional charge. If this is not possible, a full refund will be provided.

No Lemon Policy - your product will be replaced should the same problem occur multiple times.

Convenient - easy drop off and pick up of the product at any Long & McQuade location.

Guitar Setup - Guitars purchased at Long & McQuade come with 1 free setup, to be redeemed within 1 year for new guitars and 90 days for used guitars.

Loaners Available - a loaner product may be given while the product is being repaired.

Power Surge Protection - your product is covered even if damaged from a power surge.

Accessory Coverage - any peripheral devices or accessories that come with your product (i.e. foot pedal, case) are also covered.

Commercial Use Coverage - music and recording professionals who purchase gear for “heavy-use” commercial purposes will still be covered.

Long & McQuade reserves the right to restrict the purchase of additional years of Performance Warranty.Used products come with a 3-month Long & McQuade Performance Warranty. Some products (i.e. computers, software, cymbals and other items) are covered only by the manufacturer‘s warranty. Consumables (i.e. strings, reeds, woodwind pads, drum sticks, batteries, tubes, cross faders) are excluded as they are designed to be replaced. Accidental or cosmetic damage is not covered. Speakers damaged by overpowering are generally not covered. Our coverage does not provide compensation for loss of use. As of June 2018 the Performance Warranty is no longer transferable. The warranty is only valid in Canada.


Purchasing additional years of coverage

If you are interested in receiving this coverage for longer than one year, you have the option of purchasing additional years of the Performance Warranty. The pricing is as follows:

NEW products: 4% of selling price to double the warranty from 1 year to 2 years. 4% for each additional year.

USED products: 4% of selling price to increase the warranty from 3 months to 1 year. 4% for each additional year. Pricing for used electronic products is 4% of the original new selling price.

GUITARS: 4% of selling price to double the warranty from 1 year to 2 years. 4% for each additional year. $45 maximum. An additional free setup is not included with additional purchased years of Performance Warranty.

BAND and ORCHESTRAL instruments: $40 up to $2,000 selling price. BRASS and STRINGS: 2% of the selling price after $2,000. WOODWINDS: 4% of the selling price after $2,000.

Some manufacturers provide warranties for longer than 1 year; however, these are usually limited warranties that do not provide the same coverage as the Long & McQuade Performance Warranty. Customers interested in more complete and convenient (but not necessarily longer) coverage are still able to purchase additional years of the Performance Warranty.