Tierra Audio Boreal FET Compressor
Tierra Audio Boreal FET Compressor
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Tierra Audio Boreal FET Compressor

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Boreal FET Compressor

The perfect control for your sound with the characteristic color of TIERRA Audio.

Boreal FET Compressor has been designed to provide your sound with a high dynamic control, optimal for the most state-of-the-art professional recordings.

Boreal FET Compressor Front Panel
Boreal FET Compressor Back Panel

Voices “In-Your-FACE”

Step 1: Insert a Boreal FET Compressor in your voice track.

Step 2: Play around with a slow ATTACK, quick RELEASE, and RATIO 4.

Step 3: Gradually increase the INPUT control. You will see how the voice compresses until it reaches the forefront of your mix. All without shredding its character.



Just Color.

The Just Color button will divert the signal away from the compression circuit but give the sound the warm and colourful qualities of the Boreal FET Compressor.

Take advantage of the gain control to use Boreal as a line preamp and get the most out of the transformers!

Overwhelming basses

Boreal FET Compressor  is the perfect tool to insert your bassline. It will balance your basses bringing a unique robustness to your mix.

Thanks to Boreal FET Compressor you will be able to work with high gain reductions through transparent pumping.

Handmade with Love in Madrid

In order to guarantee the correct electron flux of the analog signal, we put together the finest “through hole” components, instead of robotically assembled miniaturized components. In this way we reduce to the minimum the electronic friction to enhance the thermal response of the equipment and avoid background noises.

Triad Magnetics® & Lundahl® transformers

Every Boreal FET Compressor is equipped with two transformers:
an original Triad Magnetics® transformer to nurture the power stage, and a Lundhal® transformer for the input stage, thus providing a more stable, precise, and lasting result, that does not generate any type of noise.

VU meters

Each Boreal FET Compressor also contains one excellent VU meter so that you can accurately control the gain levels of the analog signal.

Gold plated connectors

When speaking about true ProAudio, all the links of the recording chain are fundamental.  Gold plated connectors guarantee the best connectivity, and a total absence of contact noise as well. A real piece of jewelry in your hands.

Made of pure cherry wood

A picture is worth a thousand words. So, we wanted to ensure that you will know that your Boreal FET Compressor has the makings of a champion only by looking at it. Finished with a warm and resistant natural cherry wood paneling, from sustainable forests, we ensure better thermal insulation and surprising aesthetics. Technology and art in a superb symbiosis. 

Light and robust

By building our products in aluminum, we ensure the highest durability, lightness, corrosion resistance, and thermal insulation. Besides all this, aluminum is an easily recyclable metal that always retains its properties, avoiding indiscriminate exploitation. Makes sense, doesn’t it?

Cardboard packaging

The cardboard packaging in which we ship our equipment comes from recycled sources and is FSC certified. They are light and resistant, protecting the equipment from impacts during transport, thanks to the air chamber system that keeps the equipment in suspension. With this change, we use fewer raw materials and resources, and we can source locally. You can take it everywhere with you thanks to its handle, keep it to store your equipment, or recycle it.

Branded by fire

We want you to use your Boreal FET Compressor intensively for decades. That is the reason why the frontal and back panels are laser engraved, avoiding deletion or damage of the screen printing over metal or wood, through time.

Certified Authenticity and Quality

With your Boreal FET Compressor, you will get a Certificate of Authenticity and Quality, sealed and signed by hand, that contains the results of the technical measurements conducted over the equipment during our extensive quality control. Thoroughness, transparency, and a 5-years warranty.


One device, one tree

Not only do we create the best products, but we also care about the environment. Therefore, we commit ourselves to plant a tree in exchange for each sold device. You may visit it whenever you want!

Technical specifications

Line input
Input impedance 600 Ω.

Line output
Maximum output: +21 dBu 1% THD.

Frequency response
0 dB at 20 Hz, -0,5 dB at 20 kHz.

Harmonic distortion (THD)
4 dBu output, 1 kHz 0,04%.

Gain level
Up to +45 dB.

Background noise (Noise floor)
Less than 100 dBu.

Signal to noise ratio (SNR)
Greater or equal to 96 dBu.

Attack time
20 microseconds to 20 milliseconds.

Release time
20 milliseconds to 1 second.

4:1, 8:1, 12:1, 20:1 and OOMPH! special ratio (super color!).

Power source
2 configurable voltage source settings on the back panel: 110 V AC 60 Hz and 220 V AC 50 Hz.

Operating temperature range
Between 32º and 104º Fahrenheit (between 0º and 40º Celsius).

Power source fuse
500 mA.