sontronics sigma

SIGMA
Ribbon microphone

One of our most popular microphones, and now established as an industry favourite, the Sontronics SIGMA ribbon microphone can be found in studios around the world.

Ribbon microphones are renowned for their smooth, uncoloured audio characteristics. Most have transformer-based output, which makes it difficult to achieve consistency when using different preamps.

The SIGMA, however, is phantom-powered and operates just like any other Sontronics microphone, allowing you to plug and play with practically any preamp you choose.

SIGMA’s sensitivity is high, and its low self-noise figure is simply unheard of for a ribbon microphone. It can be employed in most applications, including broadcast, speech, male and female vocals, drums and percussion, miking guitar cabinets, acoustic guitar, piano and orchestral instruments.

The SIGMA is supplied with its own unique mounting system in a luxury aluminium flightcase lined with black velvet.

Click here to find out how to get the most from the SIGMA.

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TECHNICAL DATA
Response: 20Hz - 15kHz
Sensitivity: 18mV/Pa -33dB ±1dB (0dB = 1V/Pa 1,000Hz)
Polar pattern: Symmetrical figure-of-eight
Impedance: ≤150 Ohms
Equivalent noise level: 14dB (A-weighted)
Max SPL (for 0.5% THD @ 1,000Hz): 135dB
Power source: Phantom power 48V ±4V
Connector: Three-pin XLR


"Quite simply the SIGMA is the warmest mic I've
heard in years. I simply love it!”
Gary Bromham, Producer (Natalie Imbruglia, Zucchero)
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TYPICAL FREQUENCY RESPONSE GRAPH - SIGMA
sigma frequency response graph