The Taurus Tux (Black Line) is an optical compressor pedal from Taurus, a boutique company in Poland1. Optical compressors use a light-dependent element to control gain reduction rather than the voltage-controlled amplifier of a typical studio comp, which many players find gives a smoother, less grabby action. What sets the Tux apart is its trigger: the compression is driven by a sidechain system, similar to the ones in the FEA OptiFet and the Daring Audio Phat Beam1. A sidechain means the circuit that detects your signal and decides when to compress is separate from the audio path itself.
Taurus builds its pedals in two lines, Black and Silver, where the Silver version has added features and fancier cosmetics1. The Black Line is the simpler, plainer option, and the later Tux MK2 carries the design forward.
How it works and how you control it
The Black Line keeps its control set simple. The single Compression knob controls the threshold, meaning it sets how hard your signal has to hit before gain reduction kicks in1. Turn it up and quieter playing stays uncompressed; turn it down and the pedal grabs more of everything.
The sidechain trigger is the interesting part for an experienced player. Because the detection circuit is separate from the audio path, the pedal can be tuned to respond to your attack without that response coloring the compressed signal itself. Ovnilab's review notes the same approach appears in the FEA OptiFet and the Daring Audio Phat Beam, so if you have played either of those, you have a reference point for how the Tux behaves1.
On tone, the review found the pedal stays out of the way:
"The tone in general is neutral and clean, with no loss of highs or lows."
That matters for a compressor more than for most pedals, since some designs shave off top end or thin the low end as they squeeze.
Power and bypass
The Tux does not take batteries, so it will need an isolated-outlet power supply or an individual wall wart1. That rules out sharing a daisy chain with your other pedals. The review of the Black Line states it runs on 12V DC1; the MK2 product page gives a range of 9 to 12V, center negative2, so a supply covering that range will cover both. The MK2 page also describes a built-in internal voltage converter that raises the supply voltage up to 24V internally2.
The footswitch is labeled true bypass, and the review reports it appears to be a relay system like Exar uses1. Relay true bypass switches the signal with an electronic relay rather than a mechanical footswitch contact directly in the audio path.
No battery option and a need for isolated power mean this pedal has to be planned into your power scheme, not just plugged into whatever chain you have on the board.
Size and build
The enclosure is pretty large, about the same size as the Joemeek FloorQ, and the review found most of the inside of the housing is empty space1. If board real estate is tight, that is worth knowing before you commit. The Black Line uses plastic knobs, where the Silver model gets metal dome knobs3.
Black Line versus Silver Line
The Silver Line Tux is a fancier version of the same pedal: the exact same quality, but with extra features3. Here is what the extra money gets you:
| Feature | Black Line | Silver Line |
|---|---|---|
| Knobs | Plastic3 | Metal dome3 |
| On/bypass indication | Footswitch label | Side panels light up red3 |
| Compression LED | No | Yes, separate small LED3 |
| Modes | One medium-strong ratio | Comp/limit toggle3 |
| Extra controls | Compression | Punch, range, attack, threshold, frequency-range3 |
The Silver model's comp mode has the same medium-strong ratio as the Black Line model, while its limit mode is a very high ratio, possibly infinity:1, working as an effective peak limiter that can also be used for extreme squashing effects3. Its punch and range controls set fully clockwise give the widest frequency-range limiting, and balancing threshold, attack and frequency-range can dial in what the reviewer calls a very exciting percussive quality3.
Ovnilab's verdict on which to buy:
"If you desire hard peak limiting or heavy squashing, then it is worth buying the Silver model. If those stronger effects"
The reviewer found the Black Line a perfectly good choice and possibly a better value otherwise3. One caveat on the Silver model at its extremes: with attack very fast and the frequency range wide, it significantly dulls the highs and robs notes of crispness, though dialing punch and range back finds a sweet spot with effective limiting and good tone and articulation3.
The MK2
The design continues in the Taurus MK2, which RockBoard's PedalPedia lists as an analog compressor designed for both guitar and bass2. It uses a passive, sound-transparent optical system designed not to alter the original sound and to be virtually noiseless, and its bass mode is described as a crystal-clear sound with high dynamics and an expressive punch2.
Videos
TaurusAmp
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Questions
Does the Taurus Tux take a battery?
No. The Black Line Tux does not take batteries and runs only on external power. Because of how it is powered it needs an isolated-outlet power supply or its own individual wall wart rather than a shared daisy chain.
Is the Taurus Tux true bypass?
Yes. The footswitch is labeled true bypass, and the review at Ovnilab reports that it appears to use a relay-based switching system, similar to the relays Exar uses in its pedals.
What is the difference between the Taurus Tux Black Line and Silver Line?
The Silver Line is a fancier version of the same pedal with extra features and cosmetics: metal dome knobs instead of plastic, side panels that light up red for on/bypass, a compression LED, punch and range knobs, and a comp/limit toggle that adds a very high limiting ratio. The core quality is the same.
How big is the Taurus Tux compressor?
The Black Line Tux is pretty large, about the same size as the Joemeek FloorQ, and the review at Ovnilab notes most of the inside of the housing is empty space, so it will take up a real chunk of pedalboard room.
Is the Taurus Tux an optical compressor?
Yes. Ovnilab describes it as an optical comp pedal from a boutique company in Poland, and its compression trigger works through a sidechain system similar to the ones in the FEA OptiFet and the Daring Audio Phat Beam.
Sources (3)
- Taurus Tux (Black Line), ovnilab.com
- Tux MK2 by Taurus, RockBoard PedalPedia, 2026
- Taurus Tux (Silver Line), ovnilab.com




