Sennheiser Mza 900 P
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Sennheiser
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The Missing Link Between the Evolution Range and the XLR World
Sennheiser Evolution series microphones are highly valued for capturing voices in interviews, reporting, conferences, or content creation. This microphone preamplifier in adapter format has been designed to facilitate their integration into more "studio" or "broadcast" setups, where XLR connectivity and Phantom power are standard. In practice, it allows you to keep your mini-jack microphone while benefiting from an easy-to-integrate 3-pin XLR output in any existing audio chain.
Who This Preamplifier Is For and Its Most Useful Applications
This preamplifier is intended for videographers, sound recordists, podcasters, and technicians who use a Sennheiser Evolution microphone with a lockable 3.5mm mini-jack and want to connect it cleanly to an XLR input. It is particularly relevant when working with a field mixer, portable recorder, console, or audio interface equipped with XLR mic inputs and Phantom power. It is also a reassuring solution in real-world conditions, as the locking mini-jack limits accidental disconnections during movement, outdoor interviews, or long recordings.
Level and Bass Control to Save Time During Mixing
Both in the field and in the studio, the perceived quality of a voice depends as much on the capture as on the management of level and low frequencies. This preamplifier provides two essential, directly accessible controls to adapt your signal to the context without multiplying accessories.
Switchable -12 dB Attenuation
The switchable -12 dB gain acts as a pad (attenuator). It helps secure the recording when the source is loud or very close to the microphone, or when the downstream XLR input easily saturates. Result: less risk of distortion and a more controlled level right from the recording.
Switchable High-Pass Filter
The switchable high-pass filter is a simple and effective ally to improve intelligibility. It helps reduce rumble, microphone stand vibrations, handling noise, and some ambient noises (distant traffic, ventilation), preserving a clearer voice that is easier to process in post-production.
Phantom Power Required
The preamplifier requires Phantom power from 10 to 52 Volts. Before a session, check that the device you are connecting to (console, interface, recorder, microphone preamplifier) can supply Phantom power within this range. This ensures stable operation and prevents unpleasant surprises when recording.
Technical specifications
| Type | preamp |
| Color | Black |
| Quantity | 1 |
| Microphone connector | lockable 3.5mm mini-jack |
| Output | 3-pin XLR |
Questions frequently asked
Is the Sennheiser MZA 900 P compatible with Evolution microphones using mini-jack?
The lockable 3.5 mm mini-jack input is designed for Sennheiser Evolution microphones using this format. The 3-pin XLR output then allows connection to an audio chain equipped with XLR microphone inputs.
What Phantom power is required for the MZA 900 P?
Phantom power between 10 and 52 V is required for the preamplifier to operate.
What is the purpose of the -12 dB attenuation on the MZA 900 P?
The switchable -12 dB gain acts as an attenuation pad. It helps to avoid distortion when the source is strong or very close to the microphone. This setting also adapts the level for a sensitive XLR input.
Does the MZA 900 P have a high-pass filter?
The high-pass filter is switchable to reduce rumble and stand vibrations. It also limits some ambient noises, such as ventilation or distant traffic.
Can this preamplifier be connected to a mixer or audio interface?
Thanks to its 3-pin XLR output, this preamplifier can be integrated into a mixer, portable recorder, console, or audio interface. The equipment used must supply Phantom power between 10 and 52 V.



