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.Now You Can:
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. Keilhauer
December 17, 2019
Top Reverb
Great Presets ! No need for much tweaking to dial in a perfect sound. But keep in mind that tweaking this box is lots of fun !
Read MoreL. Roccatagliati
December 16, 2019
A little different from the others
I really love this kind of reverb, proper analog feeling
Read MoreM. Fletcher
December 5, 2019
Beautiful
Another great reverb from UA. I have never owned the hardware to this or any of the UA plugins that I’ve purchased from UA but what a thrill it is to have such quality at my fingertips in...
Read MoreP. Choudhury
November 26, 2019
Happy to Have this Reverb
Thanks to me that I purchased this reverb. Endless things can be done and the sound!! Ah!!!! just toooo good!!!
Read MoreA. de David-Beauregard
November 4, 2019
Excellent reverb but hold up
Now listen, this thing sounds great no doubt, but only in VERY specific scenarios.
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
M. Keilhauer
Top Reverb
Great Presets ! No need for much tweaking to dial in a perfect sound.
But keep in mind that tweaking this box is lots of fun !L. Roccatagliati
A little different from the others
I really love this kind of reverb, proper analog feeling
M. Fletcher
Beautiful
Another great reverb from UA. I have never owned the hardware to this or any of the UA plugins that I’ve purchased from UA but what a thrill it is to have such quality at my fingertips in my home. Thanks UA
P. Choudhury
Happy to Have this Reverb
Thanks to me that I purchased this reverb. Endless things can be done and the sound!! Ah!!!! just toooo good!!!
P. Etherington
Great replication
Sounds just like my BX 20. Incredible
A. de David-Beauregard
Excellent reverb but hold up
Now listen, this thing sounds great no doubt, but only in VERY specific scenarios.
E. Choi
Simple, but very warm
My first uad reverb, and i never regret buy this. I love this
T. Ratcliffe
Fantastic way to add depth to Vocals and Piano
I was looking for something to add the flavour of John Lennon's Imagine to my track and this certainly did it. Sounds lush on vocals and gives depth to my upright piano. Perfect for reverb for singer-songwriters.
D. James
The best spring reverb in a plug-in
This recreation of the original sounds incredible. Picked it up on sale with the EMT plate. My reverb game has leveled up big time.
l. morrish-thomas
Nice subtle spring
Quite a subtle, hi fi spring, sits in the mix really nicely. Only downside is that I'd prefer a bit more variation in sound between tank A and B, but regardless it sounds great
M. Kempter
Lovely Springverb
I love it but use it not often. Would choose it more if the decay time would be a load shorter. Please. It works with a gate behind the verb, but hey.
J. Skomarovsky
Unique
Unique, useful in specific situations, but far from versatile.
UAD User
Très très bonne réverb
BX 20 is one of the best, I am very surprise by the quality. One word Stunning... Bravo and Thanks
d. sexton
Lush
Well..... What can I say.....
This is a lush ReverbD. Perini
AKG BX 20 Spring Reverb
Mi mancava proprio questa pasta di riverbero.
d. perez
Hermosa reverb
Divina spring Reverb estereo!
R. Kirk
Ooooooh Yeah!
I've never worked with the original so I can't compare the two, but this reverb sounds incredible. Period. I'm kind of a spring reverb fanatic, and have a custom setup with 4 reverb tanks in addition to those built-in to my amps and cabinets.
The AKG BX20 plugin doesn't really sound like *any* of my spring reverbs. While it can't reproduce some of the low-fi trashy and "sproingy" sounds I love about my hardware 'verbs, the BX20 DOES offer an incredibly smooth, deep + wide sound that augments but doesn't mask the source (unless you want it to). It sounds closer to a plate in my opinion, and arguably even better than the beloved UAD EMT 140
Overnight, the AKG BX20 has joined the Lexicon 480L as my absolute favorite UAD reverb plugins. I can't imagine you'd be disappointed.N. Borgen
Sounds great
This is a fantastic spring reverb ... I use it on vocals and guitars and it brings beautiful "air" to my productions ...
K. Kajiya
Amazing reverb
I just love it using on clean tone guitar.
s. santoni
Amazing
Most faithful!
