Sound Devices CD1 Dynamic Cardioid Capsule

Dynamic Vocal Capsule Designed for Consistency and Touring
The Sound Devices CD1 is a dynamic cardioid microphone capsule engineered specifically for the A20-HH handheld transmitter. Designed to provide consistent sound and unmatched reliability, the CD1 is factory calibrated to ensure every unit delivers the exact same performance—no variation in sensitivity or tonal character from one to the next. This is the only dynamic capsule in the world to be 100% calibrated, making it the most dependable choice for audio professionals who demand sonic accuracy on every stage or set.

Dual-Diaphragm Design for Clarity and Noise Rejection
At the heart of the CD1 is a patented dual-engine construction featuring two diaphragms and two voice coils. This unique design provides remarkable polar-pattern consistency across the frequency spectrum, resulting in natural off-axis rejection and excellent control over feedback. The cardioid pickup pattern keeps the focus on the performer, minimizing unwanted background noise from the sides and rear of the mic.

Tailored Frequency Response for Live Vocal Applications
With a smooth frequency response spanning 50 Hz to 15 kHz, the CD1 capsule is tuned to capture vocal performances with clarity, warmth, and presence. Its sound signature is ideal for lead vocals, spoken word, and performance dialogue, making it an excellent choice for concert tours, broadcast environments, and theatrical productions where intelligibility is critical.

Handles Loud Sources Without Breaking a Sweat
The CD1 can handle high sound pressure levels exceeding 140 dB SPL without distortion. Whether you're capturing powerful vocals or using it on loud stages with monitor bleed, this capsule remains composed and clean. Combined with its low output impedance of 600 ohms and a sensitivity of -54 dBV/Pa, the CD1 integrates easily into professional wireless systems without the need for added attenuation or compensation.

Built for Reliability on the Road
Durability is a top priority for touring professionals, and the CD1 delivers. Its rugged metal housing, steel mesh grille, and internal shock isolation system ensure it can withstand drops, handling, and the daily rigors of travel. Even after repeated use in tough environments, this capsule maintains performance, keeping your shows on schedule without compromising sound quality.

Compatible with A20-HH Handheld Transmitters
The CD1 is designed exclusively for use with the Sound Devices A20-HH transmitter. It screws directly onto the mic body and offers a secure fit for demanding live and location recording applications. Combined with the A20-HH’s digital wireless system, the CD1 provides a complete solution for pristine wireless vocal transmission.