CMS-2 Crystal Clear M-S Stereo Recording for Orchestras, Ensembles and Live Performance

The CMS-2 has been discontinued and is available while stocks last.

Delivers a natural, uncolored sound and excellent reproduction of the stereo sound image.

It is ideal as a main microphone for orchestras or musical groups, and is perfect for capturing difficult sound ambiences for live performances. The M-S design also allows for versatility in post-production and mixing.

Sanken Chromatic CMS-2 with H-21D clip

“The clarity and musicality of the 100k’s gave Joe Kraemer’s score great transparency, which allowed the music to emotionally enhance the film to its fullest.”

Bruce Botnick recorded the orchestral score of Tom Cruise’s “Jack Reacher” with five Sanken CO-100K microphones

“My main orchestral sound came from 6 Sanken CO-100Ks, an LCR tree above the conductor, and 3 rear. These mics have a phenomenal response and a texture in the top that captures that high air in a warm way.”

Grammy Award-winning Frank Filipetti recording LA Philharmonic

“We loved the sound of acoustic guitar with the CU-55, and because they are small and side-address, they work very favorably when getting them into tight spots.”

Rob Jaczko, Chair of the Music Production and Engineering Department at Boston’s Berklee College of Music.

“I’ve been messing around with the CU-55 for about a year and just fell in love with it. I’ve used it on a lot of different instruments, the mic is fairly crisp, but not unnaturally so.”

Grammy Award-winning producer/engineer Chuck Ainlay recording JD & The Straight Shot.

“The CU-55s are small and unobtrusive, but they have a wonderful low frequency response while still providing super quick transients. You get a lot of air without harshness, and a really nice deep low end.”

Grammy Award-winning Frank Filipetti recording LA Philharmonic

“The CUW-180s perform wonderfully anywhere and everywhere, I use them as a pair over the stage for ambience. Eight feet up or so, at the lip of the stage angled at 45 degrees. I also use them for ensemble sections, as a section mic it is fabulous.”

Grammy and Emmy Award-winner Rob Macomber, Chief Engineer of the Music Studios at Jazz at Lincoln Center

Overhead Stereo Recording For Orchestras, Choruses and Choirs

The world’s smallest and lightest M-S stereo microphone for studio and live music recording

The CMS-2 M-S stereo condenser microphone was designed primarily to record orchestras, choruses and choirs in theatres, concert halls and churches.

Because of the “one point” physical presence of the microphone itself, the operator can obtain a very naturally mixed stereo sound with the use of the MB-2A matrix box. The light titanium matched diaphragms permit a wide frequency response and the ability to withstand high SPLs up to 145dB.

The CMS-2 features a very flat frequency response 20Hz to 18kHZ and inaudible self-noise 16dB or less, which makes it well suited for high resolution recording. It also features an original Sanken Push-Pull type capsule design which gives it a 6dB higher sensitivity than similar sized conventional microphones.

The CMS-2 stereo microphone has a high dynamic range of 129dB [maximum SPL = 145dB at 1% THD]. It has a one-micron thick titanium diaphragm that is pre-set for use with a 127° perspective controllable matrix box. In addition, the CMS-2 can work with any standard matrix box.

  • Very natural stereo sound
  • Very high dynamic range
  • Ideal for broadcasting, as well as studio recording
  • Original Sanken Push-Pull capsule design
  • Titanium diaphragm resistant to moisture and temperature change


Sanken Chromatic Logo 02 outlineCU-55CU-51CO-100KCU-41RCU-44X MK IICMS-2
Acoustic Guitar
Background or Chorus Vocals
Brass and Woodwind
Drums Close Mic
Electric/Bass Guitar Amps
Orchestra Mains
Orchestra Solo
Sound Design, Effects and ATMOS
Upright Bass

CMS-2 Applications | Brochure PDF







  • Acoustic Guitar
  • Background or Chorus Vocals
  • Orchestra Mains
  • Overheads
  • Piano
  • Strings
Brochure PDF CMS-2



Model Name



DC biased condenser


Side = Figure of eight
Mid = Cardiod

Frequency range

20Hz – 18kHz


-51dB(2.8mV, 0dB=1V/Pa)

Equivalent noise level (IEC)

16dB A

Max SPL(1% THD)

145dB SPL

Output impedance( 1kHz )

250 ohms


+48V±4V phantom

Current consumption

1.4mA × 2


180g/ .4lbs


173mm x 20.5mm (D)
6.81in x .81in (D)

Surface finish

Satin nickel


XLR-3-12C(M) equivalent
1: GND, 2: Hot, 3: Cold

CMS-2 Polar Response
CMS-2 Frequency Response Side and Mid
Decoding M-S Signals from CMS-2

The CMS-2 outputs M and S signals. These can be decoded to Left and Right using the optional MB-2D decoder or can be decoded in the mixing console…

To derive the left and right channel outputs from M-S coincident microphone sources use the following summing and difference:
L ch : Sum of M and S
R ch : Difference between M and S

By connecting the outputs to the mixer as shown, both M and S signals can be decoded as L ch. and R ch. The angle between L and R can also be varied by the adjustment of the S ch. fader volume. When levels of M and S are the same, the stereophonic angle is 127°.

CMS-2 M-S Mixer Decoding


CMS-2 Included Accessories:
HD-21D Microphone Clip
Vinyl Case

CMS-2 Optional Accessories:


Microphone Clip for CMS-2. Included with CMS-2.

CMS-2 H-21D Microphone Clip for CMS-2


Matrix M-S to L-R

CUW-180 MB-2D Matrix M-S to L-R