STA Effects
"Set of six high-end tube processors"
The 2nd generation of six valve simulating effects using the emulation of the Summing Tube Amplifier technology.
Software product, electronic download, immediate delivery.
Exact model of valve circuits
Compatible with MacOS and Windows
This effect offers advanced calibration (headroom adjustment) - the relation between the digital and analog levels.
Plug-in in AAX, Audio Unit and VST format compatible with all major audio workstations


The precise simulation of several valve circuits gives the STA effects their unique analog feel and warmth.

Six user-requested plug-ins
Perfect high-end tube sound
Two signal paths mixed on a vacuum tube
The unique and warm character
5 valve circuit modes available
Precise circuit simulation

The Bundle

The bundle contains STA Chorus that gives your instruments a little warmth and tickling vibe! Extra punch, meat, juice... call it what you want, but the STA Flanger delivers it. If your sound is not spacey enough, take it to another universe with the STA Phaser! The STA Enhancer will make your mixes beautiful and bright. But the main effect that gives the STAs their character is the STA Preamp (also sold separately). The second generation of the plug-in bundle has been enriched with the STA Delay.

What's in the Bundle

  • STA Delay
  • STA Chorus
  • STA Flanger
  • STA Phaser
  • STA Enhancer
  • STA Preamp

5 valve circuit modes available

The valve saturation colour of the STA Effects depends on the Mode selection. Changing the type of tube circuit affects the tube working point and frequency response.

  • P - Presence – a higher amount of signal on mid-high frequencies allows better cutting through the mix.
  • V - Vintage – has smoother highs and more even harmonics.
  • B - Brown – has an almost flat response with only light high frequencies rolling off and nice higher harmonics punch.
  • W - White – has a higher amount of signal on higher frequencies and a balanced ratio between the even and odd harmonics.
  • L - LoFi – contains less low and high frequencies. We make our plug-ins as real as possible with all the natural analog feeling and side effects.


Common effects

The ordinary digital effects mix their wet and dry signals as simple as A+B=C. This is as cool as all the standards you may rely on. When we deal with vacuum tubes, there is also another approach possible.

Summing on a tube

STA (Summing Tube Amplifier) uses two signal paths, one is processed by modulation or spectral change and the other is not processed. These two signals are mixed using a vacuum tube. This gives “ordinary” effects like Flanger or Phaser a really unique and warm character.


Discover the product features in Audified and 3rd party video tutorials and reviews.

Andrei Martinez Agras
Audified STA Effects | STA Preamp
ADSR Music Production Tutorials
Audified - Intro to STA Effects + Enhancer & Preamp - First Look

Technical info

System requirements of the selected product. For some effects and applications, we have versions compatible with older systems. Please visit the Downloads page and browse the available versions if your system is older than specified here.

Mac OS X 10.9 - macOS 11.1
AAX 32b, AAX 64b, AU 32b, AU 64b, VST2 32b, VST2 64b, VST3 32b, VST3 64b, Apple Silicon Compatible
Windows 7 - Windows 10
AAX 32b, AAX 64b, VST2 32b, VST2 64b, VST3 32b, VST3 64b

Customer Reviews

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