Schwerkraftmaschine - Der Kompressor

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The master of mastering

We have spent so much time planning, constructing, testing, programming, checking... and above all else, listening.
This product incorporates the sum of all our expertise, combined with the feedback we got on the VTC.

The result is a Vari-Mu compressor without equal. “Der Kompressor.”

We are proud of the result and are delighted to be able to put a tool in your hand that will make your music sound even better.

How the Schwerkraftmachine polishes sound to perfection

In the Schwerkraftmaschine, the signal passes through a total of three transformers and four triode tubes per channel.

Why does this matter? Tubes, and especially triodes, add harmonic overtones to the signal that the human ear finds pleasing, while improving our perception of individual sounds.
The individual instruments are given additional presence through the tubes.
Through the conversion of electricity into magnetic fields and back to electricity, the transformers and their non-linearities increase the density of the sound before it is compressed.
The bass becomes cleaner and more defined. The high frequencies are pleasantly rounded.

The Schwerkraftmaschine makes the difference between “well mixed” and “sounds perfect”.

The compression modes

Whether it is about softly compressing the sound, a more hard effect, or responding to complex situations...
There is a program for everything.

Generating a digital control signal offers flexibility that simply cannot be found in analogue equipment.
This makes it possible to emulate the behaviour of any existing compressor.

You need the Schwerkraftmaschine to work like an opto-compressor, including its memory effect?
But attack and release should still be adjustable?
Easy as pie.

Or do you need it soft like a Vari-Mu? Or preferably just like a VCA?

Tasks like this are child’s play for the Schwerkraftmaschine.
We have created completely unique programs that have previously never existed in any compressor, which generate the control signal based on complex rules.

We have created and optimised this equipment through countless listening sessions.
Just choose the right program for the each song.

The side-chain filter

The side-chain filter determines which frequency range the compressor will respond to.

Prevent pumps using the low-cut filter.

Add weight to high or low frequencies using the pitch filter (tilt EQ).

The side-chain filter works separately to the built-in compression mode filters.
Effect of the side-chain filter on the audio signal

The motor control

Every control is fitted with a servo-motor which can set the potentiometer in any position.
You can make adjustments whenever you want – a slip clutch combined with software always give your direct control priority.

You don’t need all these modern network-based tools? Not a problem.
The Schwerkraftmaschine can be completely controlled from the front plate, where it behaves like any other piece of hardware.

The network connection

Connect the Schwerkraftmaschine to your network. It acquires the settings it needs automatically via DCHP.
You can control the Schwerkraftmaschine from anywhere in the world – be that Sydney, L.A., or even Berlin.

The Plug-In

Download the plug-in to your favourite DAW and control the Schwerkraftmaschine via the plug-in. The motor potentiometer follows every movement.

Or directly on the device. Both settings are synchronised.

When you save your song with the plug-in, the settings are automatically saved in the Schwerkraftmaschine, too. When you reload the song, all your settings are back. All the controls are exactly as they were before.


  • Stereo device
  • Transformer balanced inputs and output
  • Frequency response: 20 – 40,000 Hz +/- 1.5dB
  • Controlable by the webpage of the device or by plug-in (VST, AU, AAX)
  • Internal power supply (25W) with a high-end toroidal transformer
  • Height: 132mm (3U), Width: 483mm, Depth: 250mm



MusoTalk live talk about the Schwerkraftmaschine (German, activate subtitles and translation)

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Sound & Recording - Superbooth 2017 (German, activate subtitles and translation)

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Audiofanzine - [NAMM] Tegeler Audio Manufaktur Schwerkraftmaschine

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Gearslutz - NAMM 2016 in a minute: Tegeler Audio Manufaktur

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delamar - Tegeler Audio Manufaktur Schwerkraftmaschine // Röhrenkompressor // SOOPERBOOTH 2016

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Rock oN - Tegeler Audio Manufaktur Schwerkraftmaschine by Rock oN from SUPERBOOTH16

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Sound On Sound magazine - Tegeler Audio Schwerkraftmaschine - Summer NAMM 2016

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Gearslutz - Tegeler Audio Schwerkraftmaschine - Der Kompressor - Gearslutz Summer NAMM 2016

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No reviews exist for the Schwerkraftmaschine at this time.
Here are a few reviews for the Schwerkraftmaschine’s predecessor, the VTC:

Gerhard Schonk wrote:

...The Tegeler is a shining example of a Vari-Mu compressor...

...After a few listening sessions, its strength when it comes to voices and in the bass range was clearly evident. The Tegeler Audio Vari Tube was on top form even on drum tracks or percussion.

Alexis Schaar wrote:

...The highly natural feel and degree of subtlety was particularly noticeable here, combined with a simultaneous presence, fullness, and density...

...Its fantastic sound character and excellent audio and processing quality puts the VTC definitely among the very small number of options open to those looking to purchase a high-end compressor or a tool to refine their mix...

Dieter Kahlen wrote:

...The boosting of quiet signals was very harmonic and pleasant...

...Something about the character of the Vari Tube is reminiscent of a Fairchild Limiter...


Option 1

Use a Wifi repeater with LAN connector. It builds a bridge between the ethernet of the Schwerkraftmaschine and your Wifi network.

Option 2

Connect the Schwerkraftmaschine via network cable to your computer and enable internet sharing.
Switch the MODE knob to 12. This will display the status page of the Schwerkraftmaschine.

The plug-in will detect the Schwerkraftmaschine automatically if both are in the same network.

Use the plugins context menu to show the IP address of the Schwerkraftmaschine. You can also go directly to the Schwerkraftmaschine's website from the context menu.

The Schwerkraftmaschine gets its IP address from a local DHCP server in you network. You will find the DHCP server in your internet router or network server. Look for a list of taken IP addresses.


   OSX  1.5.0

   Windows  1.5.0


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