Sound comparison of two pairs of microphones with M / S technique, tested on an Austrian zither.
This week we are testing two more pairs of microphones using the M / S microphone technique. This technique involves the use of two microphones in coincident positions, the mid (center) is a small diaphragm condenser while the side is a large diaphragm condenser with Figure of 8 polar pattern.
Using this type of technique allows for perfect monocompatibility and the possibility of having independent management of the stereo panorama.

How does it work?
The mid is recorded on a single track, the side, through the duplication of the inverted phase track or the application of a plug in that works as an M / S matrix, is recorded on two separate tracks. The three tracks created can then be mixed to have the best ratio between center signal and stereo signal.
For this test we used the following pairs of microphones:
First couple:
- DPA 4015TL (Mid)
- Neumann U87 (Side)
Second pair:
- Schoeps MK-4 (Mid)
- AKG C414 XLS II (Side)

We have chosen an Austrian zither as a musical instrument for the following reasons:
- broad spectrum of frequencies
- high frequencies emphasized
- transients and harmonics to capture with precision
- octave to octave, wide stereo panorama
There are two preamps used API 512C, chosen for their linearity and to have a unique comparison with past tests.
In the video test you will hear and see two musical patterns:
one percussive and one arpeggiated.
The test is divided in this way:
- Mid listening
- Listening to Side
- Listening M / S
- M / S listening bypassed
Sound technician
- George Durantino
- Francis Guarnaccia
Good music everyone!
Antonio Campeglia