Sound Pure's Take

he Microphone Parts SDC-84 Stereo Pair delivers classic European small-diaphragm condenser precision without the steep boutique price tag or high-frequency brittleness found in mass-market pencil mics. Engineered around an ultra-clean, transformerless Class-A FET circuit paired with hand-selected 22mm cardioid capsules, this matched pair is built for engineers who demand ruler-flat accuracy, lightning-fast transient capture, and deep spatial imaging.

What sets the SDC-84 pair apart is its commitment to phase coherency and linear frequency response. By eschewing transformer saturation, these mics avoid mid-range smearing and aggressive high-end tilt, allowing acoustic guitars, piano, drum overheads, and orchestral ensembles to translate with absolute truth. Whether capturing delicate acoustic fingerpicking or high-SPL drum transients, the SDC-84 set provides high headroom, ultra-low self-noise, and modular capsule versatility in a reliable, workhorse package.

The Microphone Parts SDC-84 Stereo Pair is an exceptional choice for studios looking for reference-grade pencil condensers. Offering transformerless transparency, precise stereo matching, and modular capsule flexibility, it provides the speed, clarity, and dimensional realism required for high-end acoustic tracking.

From Microphone Parts

The Microphone Parts SDC-84 (Small Diaphragm Condenser) Stereo Pair is a reference-grade, small-diaphragm pencil microphone set designed to deliver classic British/German console transparency, lightning-fast transient speed, and exceptional spatial imaging. Engineered by Microphone Parts, the SDC-84 builds upon the famed transformerless circuit architecture of vintage European studio pencils, combining an ultra-thin 22mm cardioid capsule with a high-headroom, low-noise discrete Class-A circuit.

Each SDC-84 stereo pair is hand-matched to ensure tight sensitivity and frequency response tolerances across the spectrum. The result is a pair of microphones that captures acoustic instruments, drum overheads, piano, and ensemble arrays with absolute phase coherency and balanced, linear depth. By eliminating transformer saturation in favor of a ultra-clean, transformerless FET output stage, the SDC-84 avoids high-frequency harshness and phase smearing, making it an ideal workhorse for critical tracking environments.

Key Features

  • Matched Cardioid Capsules: Features hand-selected 22mm gold-sputtered, ultra-thin diaphragms matched within precise tolerances for accurate stereo imaging and phase alignment.

  • Transformerless Class-A FET Circuitry: High-grade discrete solid-state amplifier stage provides ruler-flat frequency response, low self-noise, and zero low-frequency phase distortion.

  • High-SPL Handling: Built-in low-noise architecture handles high sound pressure levels with high dynamic range, excelling on loud acoustic sources, drum overheads, and percussion.

  • Pristine Top-End & Low-End Extension: Captures airy top-end detail and smooth, uncolored transient attack without the brittle, high-frequency resonance spikes often found in mass-produced SDCs.

  • Modular Capsule Capability: Threaded capsule design allows seamless swapping to optional hypercardioid or omnidirectional capsule heads (available separately) for versatile acoustic room and spot miking.

  • Complete Stereo Kit: Shipped as a complete matched pair including shock mounts, foam windscreens, and a protective carrying case.

Capsule Type
22mm true condenser (gold-sputtered, ultra-thin Mylar®)
Polar Pattern
Cardioid (interchangeable omni/hypercardioid available)
Circuit Topology
Transformerless discrete Class-A FET
Frequency Range
$20\text{ Hz to } 20,000\text{ Hz}$
Sensitivity
$12\text{ mV/Pa}$ (nominal)
Equivalent Noise Level
$<15\text{ dBA}$ (A-weighted)
Maximum SPL
$138\text{ dB}$ ($0.5\%$ THD @ $1000\text{ Hz}$)
Output Impedance
$150\ \Omega$, balanced
Power Requirements
$+48\text{V}$ Phantom Power ($\pm 4\text{V}$)
Connector
3-pin gold-plated XLR
Matching Tolerance
Frequency response matched within $\pm 0.5\text{ dB}$, sensitivity within $\pm 0.5\text{ mV/Pa}$
Sound Pure Studios Control Room A — Durham, NC

Sound Pure Studios · Durham, NC

Come hear it in our control rooms.

Sound Pure is a working studio in Durham, NC — a 1,000 sq ft live room and two pro control rooms. Book a session to audition gear in a world-class acoustic space before you buy.

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