Schoeps Stereo-Set CMC 6, MK 21








Schoeps Stereo-Set CMC 6, MK 21 [139003]
The Schoeps Stereo-Set CMC 6, MK 21 contains two complete Colette microphones with matched MK 21 wide cardioid capsules and CMC 6 U microphone amplifiers. It comes with a matching certificate, two stand clamps, two windscreens and a wooden storage case.
Applications
This set suits main-pair ensemble recording where both the musicians and the room acoustics are captured. Use spacing between the microphones for stereo reproduction. The wide cardioid pattern produces insufficient level differences between channels for XY stereo.
Features
- Two MK 21 capsules, matched as a pair and supplied with a certificate.
- Two CMC 6 U amplifiers with separate balanced XLR-3M outputs.
- Modular Colette system with interchangeable MK capsules.
- Automatic adaptation to P12 or P48 phantom power per microphone.
- Schoeps RFI Shield for protection against radio-frequency interference.
Technical specifications
The following values apply to each microphone.
- Microphone type: small-diaphragm condenser microphone.
- Polar pattern: wide cardioid.
- Frequency range: 30 Hz–29 kHz.
- Sensitivity: 14 mV/Pa, -37 dBV/Pa.
- Equivalent noise level: 13 dB(A); 23 dB CCIR.
- Signal-to-noise ratio: 81 dB(A).
- Maximum sound pressure level: 131 dB SPL at THD < 0.5%.
- Output: XLR-3M, analog, one channel.
- Phantom power: P12, 10–13 V; P48, 20–52 V.
- Current consumption: 8 mA at P12; 4 mA at P48.
- Output impedance: 42 Ω.
- Minimum recommended load impedance: 1 kΩ.
- Maximum output voltage: 1 V into a 1 kΩ load.
- Fixed low-cut filter: 20 Hz, 12 dB/octave.
Included
- 2 × MK 21 wide cardioid capsule, matched as a pair.
- Matching certificate.
- 2 × CMC 6 U microphone amplifier.
- 2 × SG 20 stand clamp, 2026 version.
- 2 × B 5 D hollow foam windscreen and pop filter.
- Schoeps hook-and-loop cable strap.
- Wooden storage case for the stereo set.
Related mono set
For one microphone with the same capsule and amplifier, choose the Mono-Set CMC 6, MK 21 [138003].
Product specifications
- Article number
- SchSteCMC64280
- SKU
- 139003
- EAN
- 4068305004099





















