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Sontronics Sigma

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Page last updated Mar 31, 2026

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Description

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Discover the Sontronics Sigma, a standout in the world of ribbon microphones, designed specifically for studio recording enthusiasts and professional musicians alike. Known for its rich and natural sound, the Sigma excels in capturing vocals, acoustic instruments, and even orchestral settings with remarkable precision. Its figure-of-eight polar pattern ensures superior off-axis rejection, making it ideal for sound isolation in a bustling studio environment.

The Sigma is engineered with a focus on delivering a smooth and warm sound signature, characteristic of vintage ribbon microphones, yet it incorporates modern advancements for improved reliability and performance. The inclusion of an internal shockmount reduces handling noise, allowing for clean and crisp recordings every time. This microphone also features a low-mass ribbon element, providing an extended frequency response that captures the nuances of any performance with clarity.

Whether you're a seasoned producer or a budding musician, the Sontronics Sigma offers a unique blend of classic charm and contemporary innovation, ensuring your recordings are nothing short of exceptional.

Key Features:

Ribbon microphone designed for studio recording
Figure-of-eight polar pattern for enhanced sound isolation
Smooth and natural sound profile ideal for vocals and acoustic instruments
Internal shockmount to minimize handling noise
Low-mass ribbon element for extended frequency response
Designed for professionals and enthusiasts seeking vintage sound with modern reliability

Videos

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Sontronics

Sontronics Sigma ribbon microphone: an introduction

Sontronics

Sigma ribbon microphone from Sontronics

Time+Space

Sontronics Sigma Ribbon Microphone

Gear4music Guitars

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Sontronics Sigma.

Comparisons

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The Sontronics Sigma offers more flexibility in placement options compared to a single stereo mic like the Apollo, which limits stereo spread.
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A coincident pair like the Sigma ensures sharper stereo imaging and better mono compatibility than a spaced pair, though at the cost of width.
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The AEA RPQ preamp is noted for enhancing ribbon microphones, specifically praised alongside Neve 5088 channels for top-end addition.
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AEA RPQ preamps are highly valued for their high impedance and EQ capabilities, particularly when paired with Coles 4038 ribbon mics.
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Owners often compare SE Voodoo passive and active models, with curiosity about tonal differences, though personal experience is mostly with the passive versions.
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The Beyerdynamic M 160 is praised for taming sibilance and adding lushness, compared to the darker sound of the Sontronics Sigma.
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Use cases and applications

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A single stereo mic is suitable for capturing a unified perspective, akin to the audience's experience, but lacks flexibility for wider stereo images.
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A pair of Sontronics Sigma 2 microphones are favored for their performance on piano, with plans to test them on strings and acoustic guitar soon.
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SE Voodoo ribbon mics, known for fitting in tight spaces and handling high SPL, offer unexpected top-end clarity and are used effectively on toms, snare, and guitar cabs.
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The Sontronics Sigma is considered the darkest ribbon mic, making it potentially effective for taming sibilance when reamping vocals through monitors.
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Affordable ribbon mic option: Golden Age Project R1 MKII, recommended for studios with good acoustic treatment due to its figure-8 pickup pattern.
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The Nady RSM-5, a budget ribbon mic, is used successfully for adding darkness to room sounds, particularly on drums.
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Features and functionality

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The Sontronics Sigma in a pair allows for adjustable placement, providing a wider stereo image than the fixed X/Y configuration of a single stereo mic.
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The Sontronics Sigma's aesthetic design is highly praised, although its intentionally dark sound profile remains a mystery to some users.
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User experience

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Owners of matched stereo pairs, like AKG C414's, find them more versatile for different recording scenarios, offering greater control over stereo imaging.
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Josh Homme

Guitarist

Kyuss

Verified via Soundonsound

"We also used some ribbon microphones on Alex’s voice, for instance the Sontronics Sigma," mentions rock guitarist Josh Homme in reference to the Sontronics Sigma Phantom-Powered Ribbon Microphone, which is part of his studio setup.

Peter Holmström

Guitarist

The Dandy Warhols

Verified via Sontronics

Featured on Sontronics' official "Famous Users" page.

"My discovery of Sontronics mics came about when I was looking online for a Helios Electronics preamp and I stumbled across the Sontronics HELIOS mic. It looked really cool, as did all the other mics on the website. I read up a bit more and couldn't find a bad review so was interested in getting hold of some for myself.

"I started out with a DELTA and HALO combination and the results are amazing! Not just on guitar amps either... I use them on everything. In my little studio I've been using them on my '60s Kalamazoo and my '50s Ampeg amps.

"I'm starting a band with my friend Herman Jolly, and he's been singing into a HALO. We've been using the DELTA on the acoustic guitar too.

"We've now got four HALOs and four DELTAs that we uses on the Dandy Warhols set-up live and in the studio. I've now got my eye on the SIGMA, SATURN and HELIOS mics and hoping to see a 500-series Sontronics preamp added to the range. The build quality and design are excellent, I'd recommend Sontronics to everyone... in fact, I already have!"

Flood

Music Producer

Verified via Sontronics

Featured on Sontronics' official "Famous Users" page.

"Sontronics was recommended to me by Alan Moulder who had just been working with Josh Homme (Queens of the Stone Age). I tried the DELTA and SIGMA and fell in love straight away. To be able to get clarity and depth so close to the amp was amazing!

"The whole thing about Sontronics is that immediacy of things sounding great without having to do anything. The ORPHEUS has such a great bite to it and all the Sontronics mics seem to have a great natural compression without losing any clarity or detail.

"There is only praise to add about value for money, amazing customer support and the knowledge that Trevor [Sontronics MD and mic designer] cares about every aspect of the mics: the sound quality, build quality, design... and I love his ability to be as caring with the everyday consumer as he is with us professionals. And the mics look amazing!

"I use the mics all the time, be it with Editors, Orbital, Karima Francis, Foals or anyone else. The mics were used on PJ Harvey's Mercury Prize-winning album Let England Shake mainly DELTA, SIGMA, ORPHEUS and HELIOS. We used DELTAs on amps; ORPHEUSs on Polly and John's vocals, brass and ambience. ORPHEUS was our go-to mic for anything and everything: voices, snare drums, acoustic guitars, autoharp, ambience and piano. For Polly's latest album The Hope Six Demolition Project we also added an ARIA for vocals… she won't record her voice with anything else now!

"Both of those albums were the sound of Sontronics, firstly because they were used on so many sources but also, more importantly, because every time we put up a Sontronics mic it gave us what we wanted: clarity, character, purity and openness. The whole album was recorded flat, which is a tribute to engineer Rob Kirwan but also to the Sontronics mics!"

"I have DELTAs, SIGMAs, HALOs, a SATURN, ARIA, ORPHEUS, ARIA and DM-1B, and they all have that immediacy of things sounding great without having to do anything!"