AKG® BX 20 Spring Reverb
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The only AKG-licensed emulation of this one-of-a-kind spring reverb.
Introduced in the late 1960s, the AKG BX 20 reverb was a high-water mark for AKG’s esteemed engineers. An ingenious assembly of mechanical and electronic componentry, the BX 20 offered the glorious depth and color of spring reverb without any of the limitations.
The AKG BX 20 Spring Reverb plug-in for UAD-2 hardware and Apollo interfaces is exclusively endorsed by AKG Acoustics, Austria and envelops your sources in gorgeously dark, dense ambience that only spring reverb can provide.Mix with the only licensed and endorsed AKG Acoustics BX 20 reverb plug-in
Envelop instruments in dark, dense, clear ambience with original dual spring tank configuration
Harness new "plug-in only" features like stereoized A/B Tank Select, Direct signal defeat, and BX 10 Tone controls
Mix with artist presets from Patrick Carney (The Black Keys), Vance Powell (Jack White), and Jacquire King (Kings of Leon)
Take a Listen
5-Minute UAD Tips
Featuring the AKG BX 20 Spring Reverb.
Unparalleled Density
The AKG BX 20's utterly unique character makes it a versatile tool for ambience as well as tone shaping. Its sonic personality features the quick onset of a classic plate reverb, and also the natural-sounding density and diffusion of a chamber — with little of the flutter or “boing” artifacts common with other spring reverbs. Unlike other spring reverb emulations, Universal Audio's hybrid delay network/convolution design provides the only plug-in representation of this mechanically controllable, acoustic ambience system. To that end, UA obsessively emulated a “golden unit” BX 20 from legendary producer, Jon Brion.
Spring Time
The BX 20 plug-in expertly captures the hardware’s unique two-stage decay. This yields warm, organic sounds whether it’s applied on percussion, vocals, or guitars, adding a unique timbre that can make individual tracks stand out — or melt away — in your mix. Short textures are chock full of colorful depth and dimension, while longer decays are rife with lush three-dimensionality, while never washing out.
New Features, More Control
The BX 20 plug-in provides the complete sound and features of the original, plus new "Mk II" features for an expanded sound palette. Tank Select provides the exact sound of the original A/B dual tank system, but includes a “stereoized” tank A or tank B, for more balanced stereo imaging. The Direct function allows you to mute the tank's direct signal for more control and minimizing conflict with the source audio — perfect for buses. The Baxandall-type tone controls — borrowed from the smaller AKG BX 10 — offers the last bit of seasoning to tailor your reverbs.
“When I heard UA was emulating the AKG BX 20, I dared them to beat my hardware – they did it.”
– Vance Powell (Jack White, The Dead Weather, The Raconteurs)
“This is the vocal reverb sound I’ve had in my head for over 20 years. I will never mix without it again.”
– Jeff Juliano (John Mayer, Shinedown, Train)
“I used the UAD AKG BX 20 plug-in during editing sessions for the new Missy Elliott single, "Where They From," produced by Pharrell. The tone instantly cut through on the vocals and percussion.”
– Mike Larson (Pharrell Williams, Daft Punk, Snoop Dogg)
“The AKG BX 20 Spring Reverb plug-in fits into tracks in fantastically unexpected ways.”
– John Paterno (Robbie Williams, Badly Drawn Boy, Bonnie Raitt)
“What a fat sounding, vibey reverb — I've been using it on everything! Its maiden voyage was mixing a couple Don Henley tracks.”
– Jeff Balding (Taylor Swift, The Eagles, Florida Georgia Line)Watch The Reviews
Customer Reviews
M. Bentel
June 16, 2018
Fantastic all-rounder
Its just awesome i love this amp ! and what i paid for it is just amazing value for money !
Read MoreM. Bentel
June 16, 2018
Perfect
Such a lovely balance to it both for subtle placement and going all out lush!
Read MoreM. Bentel
June 16, 2018
Perfect
Such a lovely balance to it both for subtle placement and going all out lush!
Read MoreC. Thorne
May 17, 2018
Fender Twin Reverb on Vocals?
I always liked the vocals through a Fender Twin Reverb . This is cleaner and hits the intimacy levels hard.
Read More -
Parameters
Input Select, Mono/Stereo: Changes input between summed mono or stereo
Tank Select, A / B / A+B: Under stereo use, changes tank options among stereoized "A" and "B" and original "A+B" configurations
Direct, Off / On: Disables/enables the spring tank's naturally occurring direct sound component
Low Cut, Off / 80 Hz: 12 dB per octave, 80 Hz filter
Bass, ±10: Continuous tone control borrowed from the AKG BX 10, ±8 dB at 150 Hz
Treble, ±10: Continuous tone control borrowed from the AKG BX 10 ±4 dB at 5 kHz
Dry/Wet, 0 to 100%: Continuously adjusts Dry and Wet signals under insert use case
Wet Solo, Off/On: Disables/enables Wet Solo function
Predelay, 0 to 250 milliseconds: Continuously adjusts Predelay amount
Channel 1 Decay, 2 to 4.5 seconds: Continuously adjusts Channel 1 Decay time
Channel 2 Decay, 2 to 4.5 seconds: Continuously adjusts Channel 2 Decay time
Channel 1 Volume, ∞ to +24 dB: Continuously adjusts Channel 1 Volume
Channel 2 Volume, ∞ to +24 dB: Continuously adjusts Channel 2 Volume
Channel 1 Pan, ±100: Continuously adjusts Channel 1 Pan
Channel 2 Pan, ±100: Continuously adjusts Channel 2 Pan
Link, Unlinks/Link: Unlinks/Links Decay, Volume and Pan parameters
Mix: Continuously blends processed and unprocessed signal
Power, Off/On: Disables/Enables plug-in (all DSP processing is bypassed)
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Customer Reviews
AKG BX 20 Spring Reverb
S. Roefs
Lush!
This thing add so much character, it's amazing!
M. Bentel
Fantastic all-rounder
Its just awesome i love this amp ! and what i paid for it is just amazing value for money !
M. Bentel
Perfect
Such a lovely balance to it both for subtle placement and going all out lush!
M. Bentel
Perfect
Such a lovely balance to it both for subtle placement and going all out lush!
J. Armstrong
Sounds great
I've really enjoyed this one.
M. Johnson
Good for Studio but too smooth for for Surf/Spaghetti Western Guitar Work
Too Smooth . practically no Boing Best Spring For that Right now is the Galaxy tape-echo's springbox
C. Thorne
Fender Twin Reverb on Vocals?
I always liked the vocals through a Fender Twin Reverb . This is cleaner and hits the intimacy levels hard.
s. rothe
one of the best Reverbs i ever owned
This plugin is awesome! i use it mainly on accoustic guitars and vocals. so nice warm and sweet sound!! a real must have
W. O'Grady
Interesting how a spring can sound so natural
When I was a small child, my father installed a steel spring between two hook screws on the underside of our kitchen table to accommodate an extra table leaf. I soon discovered the spring made a delightful sound when plucked. Years later, I learned guitar amplifiers incorporated such springs to simulate reverberation. Now, full circle: A digital emulation. Click the "wet solo" button and dial down to nearly dry, and you'll get the closest sound to a natural space like a forest, or the banks of a stream.
B. Evans II
Blown Away!!!!!
From first listen I was blown away by this reverb. The smoothness is really amazing. I am constantly trying to NOT use it out of fear of too much of a good thing. That's a problem I'm more than happy to have. Just get it!
D. Lopez-Figuereo
Amazing on vocals and guitars
best spring reverb I’ve ever heard in plugin form.
N. Steckhan
Put some magic
Used this with my desktop synthesizers (DSI Evolver, Tetra) and they appear more lively.
M. Mai
A Great Reverb Add
Demo’d this with my strat and knew immediately it was a must have. The word that comes to mind is lucious. I’ve started using it on vocal tracks as well. Great Plug-in!
S. Tib
Beautiful Reverb on vocals
I own already numerous reverb from UAD, they all have their character and use. When I tried the AKG BX 20 on a vocal bus of a deep house remix that I was working on, it was a revelation. I found it very smooth, natural sounding, no brightness, the preset are great starting point and they make the vocal sit perfectly in the mix. On the top of that the AKG BX20 was on special for 74$ with th 25$ UAD voucher, so it was hard to resist!
Y. Natsume
Great and easy!
Great and easy!
C. Jolley
Buy This. Don't Think Twice.
Dear Universal Audio.
Please congratulate your marketing department on a job well done. I had absolutely NO intention of buying this thing, but on a pique of curiosity motivated by one of your lovely "5 minutes with this plugin" emails, I tried out the AKG BX 20. I have LOADS of reverb options. Plates, digitals, rooms, IRs, blah blah blah. Including some custom stuff. No interest in a spring at all. Well, I tried it, and was floored with its sumptuous beauty. It performs a magic on stringed instrument recordings that is hard to believe. I fit it into two tracks on my new album, and it took over from the plates I had previously assigned. It's musical, it's lovely, and I bought it in 5 minutes. Thanks also for the coupons which, grouped with the sales price, made it an absolute steal. I love this thing..
Beautiful
This is by far the best spring reverb plug-in I’ve ever used. The controls are easy to figure out and even the presets are well done and usable. It adds depth and character to everything I put it on.
R. Gagl
Whow!
The AKG BX 20 became my favourite spring reverb within seconds. In my eyes one of the best of its kind on the market. Awesome!
R. Gagl
Whow!
The AKG BX 20 became my favourite spring reverb within seconds. In my eyes one of the best of its kind on the market. Awesome!
F. Grandonico
Great Value
Dark, dense and realistic reverb.. great purchase
