Description
The CAD Equitek E100S is a large-diaphragm supercardioid condenser designed and manufactured in the USA, built around CAD’s engineering pedigree for quiet, musical capture. Its class-leading noise floor of just 3.7 dBA means it can sit on subtle sources without adding hiss or self-noise to the signal chain.
At the heart of the E100S is CAD’s bootstrapped, full-differential Quadra-FET front end. This proprietary circuit topology boosts sensitivity while keeping distortion low, so transients stay clean even as levels climb. The result is a smooth, vintage-flavored character paired with a robust, full low end — a combination that suits vocals and instruments looking for warmth rather than a clinical, ultra-bright top end.
The supercardioid polar pattern tightens rejection from the sides more than a standard cardioid, giving engineers extra isolation in busy tracking rooms or multi-mic setups where spill control matters.
- Large-diaphragm condenser capsule
- Supercardioid polar pattern for tighter off-axis rejection
- 3.7 dBA self-noise — extremely low for its class
- Bootstrapped, full-differential Quadra-FET circuitry
- High sensitivity with low distortion output
- Designed and built in the USA by CAD
For studios and stages that need a quiet, low-distortion mic with vintage warmth and dependable isolation, the Equitek E100S is a solid, no-nonsense choice.









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