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
O. Morris
December 14, 2018
AKG BX 20 REVERB
lush sounding reverb i start out with a preset as a starting point and then craft my sound. This plug in is a swiss army knife of reverbs
Read MoreD. Blackett
December 13, 2018
Rich and dark
My favourite reverb plugin. The way it catches on the right harmonics and beds in the track is beautiful
Read MoreD. Blackett
December 13, 2018
Rich and dark
My favourite reverb plugin. The way it catches on the right harmonics and beds in the track is beautiful
Read MoreM. Kourilov
December 13, 2018
Great Unique Reverb AKG bx 20
Well... what can I say? One of the must have reverbs. Beautiful, smooth, really helps to keep the vocals sit nice in a mix. To be ownest it just saved my arse with the latest track that I...
Read MoreN. Ben Shabat
December 11, 2018
sounds very good! but.
hard to hear the springs and the shortest delay time is very long so it's hard to fit that into a mix
Read MoreM. Ottavi
December 9, 2018
Beautiful reverb
Epic reverb !!! It’s amazing to play with it and explore the settings . The sound of it is awesome !
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
O. Morris
AKG BX 20 REVERB
lush sounding reverb i start out with a preset as a starting point and then craft my sound. This plug in is a swiss army knife of reverbs
D. Blackett
Rich and dark
My favourite reverb plugin. The way it catches on the right harmonics and beds in the track is beautiful
D. Blackett
Rich and dark
My favourite reverb plugin. The way it catches on the right harmonics and beds in the track is beautiful
M. Kourilov
Great Unique Reverb AKG bx 20
Well... what can I say? One of the must have reverbs. Beautiful, smooth, really helps to keep the vocals sit nice in a mix. To be ownest it just saved my arse with the latest track that I worked on. The singer wasn’t as good as I wish her to be so I just add that reverb and it smooths all the issues with her singing. Bravo UA
N. Ben Shabat
sounds very good! but.
hard to hear the springs and the shortest delay time is very long so it's hard to fit that into a mix
M. Ottavi
Beautiful reverb
Epic reverb !!! It’s amazing to play with it and explore the settings . The sound of it is awesome !
D. Fleming
Beautiful reverb
Sounds great on guitars and synths. My favourite reverb is the EMT 140 but this is a close second!
L. REBOLA
Great reverb
Unique character and los of settings.
T. Peters
Just Amazing.
I bought this to track some washy guitars in real time with my Apollo.
I think it might be the best sounding reverb I've ever heard in the box.
Its quite sensitive to input levels but so detailed its unreal. Not for everything but if you track live instruments its the one!A. Avelin
Lush
It's amazing! Still my favorite reverb almost a year after purchase!
A. Araujo Cunha
Amazing Reverb
This is one of the most gorgeous reverb I have used, so smooth, but remember to use it carefully otherwise your mix will suck.
j. Rodriguez
Grate Amazing !
I just used the plugin literally about 30 min.
I use the hardware every day and it's so close!
It's amazing literally is like the hardware with more controls it's a must!
incredible!G. Petel
Probably the best spring ever
Sounds amazing on guitars and drums
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DEVOURS PGM/MEM Resources
What good is something that sounds as good as the AKG BX20 if you can't ever use it? I won't argue with its sound quality, but it is the FIRST thing that eats up my PRM/MEM resources after i spend all the time getting the sound I want. For tracking, fine, whatever, but it just loads in a really horrible way. I love a sound I can never use, which is almost worse than "i'll do the best with what this can do"..
R. Alvarez-Torre
Excellent reverb!
I’ve been using this in my aux insert for my blues guitar playing and it sounds so authentic.
C. Bell
Great Verb
One of the best spring reverb plugins I have heard if not one of the best reverbs.
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Very Nice
Completing the UAD reverb collection with this one
S. Rehbein
Lush and creamy
Best spring reverb plugin, very 3d and easy to dial without the noises of the hardware. It would be nice to have shorter decay times. Great Job!
G. Westwood
Wow what a sound!!
Lush spring reverb that creates the space you need in a mix.
Amazing on guitar and just as good on vocalsY. Rotem
best reverb ever
This reverb is so deep and 3D. Amazing on just about any source. Sounds just like the real thing