Sontronics Zeta - Cardioid JFET Condenser Microphone

The Sontronics ZETA is a high-performance large-diaphragm JFET condenser microphone that delivers a polished, mix-ready sound from the moment you hit record. Hand-built in England and featuring a boutique Lundahl transformer, it combines exceptional sensitivity with ultra-low self-noise to capture every nuance of your performance with clarity, warmth and musical detail.

Designed for creators who care deeply about tone, ZETA excels on vocals, voiceover, acoustic instruments, piano, strings and more, bringing an expressive, three-dimensional quality to any source. Its rich, pre-finished character makes it easy to achieve professional results quickly, helping your recordings sit naturally in a mix without heavy processing.

Polished, Mix-Ready Sound

ZETA is voiced to give you a refined, characterful sound straight out of the box. The smooth top end, rich midrange and controlled low frequencies work together to deliver a flattering, modern tone that feels like it has already been gently processed. This makes it ideal for producers, engineers and content creators who want to move quickly from inspiration to finished track without getting bogged down in plug-ins.

High-Sensitivity JFET Design

At the heart of ZETA is a high-sensitivity JFET circuit that captures every breath, texture and nuance of your performance. Subtle vocal inflections, delicate fingerpicking and quiet room details are rendered with life and realism, giving your recordings depth and presence. This sensitivity also means you can work comfortably at lower preamp gain settings, helping maintain a clean, open signal path.

Boutique Transformer Warmth

The inclusion of a Lundahl transformer gives ZETA a distinctly musical character without sacrificing clarity. Transients remain crisp and defined, but there is a gentle sweetness and solidity to the sound that helps sources sit together in a mix. Vocals feel full and confident, acoustic instruments gain extra body, and the overall tone stays smooth and engaging even on brighter performances.

Ultra-Low Noise for Confident Recording

With an equivalent noise level of just 9 dB(A), ZETA keeps your recordings clean and controlled, even in quieter rooms or at longer mic distances. Voice artists, podcasters and ASMR creators can achieve intimate, close-up clarity without distracting hiss, while engineers capturing soft instruments or ambient textures can rely on a quiet, stable noise floor that preserves detail and dynamics.

Versatile Studio Workhorse

ZETA is tailored to handle a wide range of studio tasks with ease. From male and female vocals, voiceover and spoken word, through to acoustic guitar, piano, strings, room miking, choral work, foley and ASMR, it brings a consistent, three-dimensional quality to every source. Its cardioid pattern focuses on the sound in front of the mic, helping to reduce unwanted room reflections and background noise so you can achieve professional results in a variety of spaces.

• High-Sensitivity JFET Circuit - The JFET design delivers exceptional sensitivity and dynamic response, capturing every nuance of vocals, instruments and ambience. This allows you to work at comfortable gain levels while still retaining all the subtle detail and expression in your performance.
• Boutique Lundahl Transformer - The Lundahl transformer imparts a smooth, musical character that enhances warmth and richness without clouding the signal. It helps vocals and instruments sit naturally in a mix, giving your recordings a refined, professional sheen.
• Ultra-Low Self-Noise - With an equivalent noise level of just 9 dB(A), ZETA keeps your recordings clean and quiet, even on soft sources or distant miking. This is ideal for voiceover, ASMR, foley and delicate acoustic work where background hiss can easily become distracting.
• Hand-Built with Modern Styling - Hand-built in England and finished in a sleek black livery with engraved badges and golden accents, ZETA combines boutique craftsmanship with a contemporary aesthetic. It looks as premium as it sounds, making it a confident centrepiece in any studio setup.

Microphone

• Microphone Type: Large-diaphragm condenser
• Polar Pattern: Cardioid
• Frequency Response: 20 Hz to 20 kHz
• Sensitivity: 33 mV/Pa
• Impedance: ≤200 Ohms
• Max SPL (for 0.5 percent THD @ 1 kHz): 125 dB
• Equivalent Noise Level: 9 dB (A-weighted)

Connectivity & Power

• Connector: 3-pin XLR
• Power: 48 V phantom power required

Physical

• Product Dimensions: 190 x 53 x 53 mm
• Product Weight: 0.68 kg
• Packaged Dimensions: 235 x 130 x 285 mm
• Packaged Weight: 2.15 kg

Included Items

• ZETA high-performance JFET microphone (with internal shockmount)
• Discrete direct stand mount
• ABS carry case with custom-cut foam inlay
• User manual