ORTF Stereo Microphone

New 2022 model - now available


  • New 2022 model with completely renewed electronics and new design
  • Stereo microphone for recording using the ORTF technique
  • excellent stereophonic characteristics: very good localization, very good spatial quality
  • preferred use as a main microphone for recording ensembles and choirs or as a stereophonic spot microphone

The MSTC is one of SCHOEPS' bestsellers. Its compact elegance and excellent spatial quality make it a classic in the sound engineer’s standard portfolio.

This microphone consists of a T-shaped two-channel microphone amplifier, which two paired MK 4 cardioid capsules are screwed onto. They are arranged at a distance of 170 mm at an angle of 110° to each other, as required for the ORTF method.

Order number

  • No. 139901 MSTC 74 (with capsules)
  • No. 132014 MSTC 7 (without capsules)


The MSTC is particularly impressive in that it usually also gives very good results without spot microphones. In addition, its placement is relatively unimportant, making it suitable for the rather inexperienced or hasty user. Set-up is quick and easy, because only a single stand and cable are required and the capsule distance and the offset angle of the capsules to each other don’t need be adjusted.

At the output of the MSTC 74 is an XLR-5M plug to which e.g. the stereophonic cable KS 5 U, or the breakout AK SU/2U is connected.



The MSTC 7 (No. 132014) comes with:

  • No. 232014, MSTC 7, stereo microphone
  • No. 161105, SG 20, stand clamp
  • No. 152202, AK SU/2U, breakout cable

The MSTC 74 (No. 139901) also includes:

  • 2 * No. 231015 MK 4, matched

For outdoor use, a wind basket, e.g. the CINELA Albert or a CINELA OSIX with single windshields W 5 D or W 20 is recommended.

Alternatively, the ORTF Outdoor Set can be used which employs single CCM microphones in an ORTF arrangement.

Technical Specifications

Pickup pattern

Cardioid (2× MK 4)

Frequency range

20 Hz - 20 kHz


-36,5 dB (V/Pa), 15 mV/Pa

Equivalent noise level (A-weighted)

14 dB

Equivalent noise level (CCIR)

24 dB

Signal-to-noise ratio (A-weighted)

80 dB

Maximum sound pressure level (THD < 0.5 %)

135 dB-SPL

Maximum output voltage

1,8 V (5 dBV) with 1 kΩ load

Low cut filter

20 Hz, 12 dB/oct.

Minimum recommended load impedance

1 kΩ

Output impedance

50 Ω

Maximum cable length

> 400 m



Powering standard / Valid range

P48 / 30-52 V
P12 / 11-13 V

Current consumption

2 mA per channel (P48)

Common mode rejection ratio (at 1 kHz)

> 55 dB


XLR-5M, analog, 2 channels

Distance between the microphones

17 cm

Recording angle



232 g (with capsules)

Surface finish

matte gray (g) or custom color

Stereophonic recording technique



MSTC 64 Ug

ORTF-stereo microphone

User guides, manuals

de | en
Stereo and Surround recording principles

by Helmut Wittek, 2012.


ORTF Series

ORTF for Stereo, Surround and 3D

Product sheets