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Sennheiser MZA 900 P - In-Line Preamplifier and Power Supply for EW Series Microphones

BH #SEMZA900P • MFR #500226
Sennheiser MZA 900 P - In-Line Preamplifier and Power Supply for EW Series Microphones
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Sennheiser MZA900P Overview

  • 1Description
  • 2In-Line Power Supply and XLR Connection
  • 3Wide Compatibility Range
  • 4Belt Clip

From Sennheiser, the MZA 900 P is an in-line power supply and preamplifier designed for use with pre polarized condenser microphones featuring a 1/8" (3.5mm) mini connection. The MZA 900 P effectively converts 48V phantom power and establishes a 3-pin XLR connection for the Sennheiser E 908B, E 908D, HSP 2, HSP 4, ME 2, ME 3, ME 4 and MKE 2 EW Gold microphones.

In-Line Power Supply and XLR Connection

Provides an XLR connection and converts phantom power to Sennheiser pre-polarized condenser microphones with a 3.5mm mini connection.

Wide Compatibility Range

Works with the Sennheiser E 908B, E 908D, HSP 2, HSP 4, ME 2, ME 3, ME 4 and MKE 2 EW Gold microphones.

Belt Clip

The attached belt clip enables easy mounting.
UPC: 615104101654

Sennheiser MZA900P Specs

Frequency Response20Hz - 20kHz
Gain0/-12 dB
Output Voltage1.8V (P48), 0.6V (P12) @ 0dB gain
Output Impedance100 Ohm
Phantom PowerP12 - P48, 10 - 52V, 2.6 - 2,8mA
Operating Temperature-20 - '60 degrees C
Dimensions0.86 x 3.93" (22 x 100mm) (Diameter x Length)
Weight60 g
Packaging Info
Package Weight0.31 lb
Box Dimensions (LxWxH)6.05 x 4.4 x 1.5"

Sennheiser MZA900P Reviews

A necessity

By Phillip
Rated 5 out of 5
Date: 2021-01-04

This is absolutely needed to connect to the Sennheiser mics as well as the SENAL UEM-155-35H-BK Omni Earset Mic. I like 3.5mm connection. Very secure.

Must have tool at a price

By Robert
Rated 4 out of 5
Date: 2019-01-21

Yes, they’re expensive but needed if you’re a professional seeking clean audio when wireless interferences are wreaking havoc. They work perfectly but knocking 1 star off for bending me over.

Handy for your kit

By Adam
Rated 5 out of 5
Date: 2018-08-07

This is a handy little device for your kit. A producer was concerned about wireless interference for an interview in a factory. I could have used an old wired lav, but prefer the Sanken mics I have. This allowed me to plug in and get great sound with no interference. Yeah, it is a little pricey for what it does, but I imagine it will be in my kit for some time.

Great, but overpriced

By William
Rated 4 out of 5
Date: 2018-07-07

I love how well this works. It sounds great. It's solidly built. But the price? Come on, Sennheiser.

Piece of Mind

By Michael
Rated 5 out of 5
Date: 2016-05-25

Love having this in my audio kit. Enables me to build my inventory of quality wireless lav mics and have the flexibility of using them as wired mics when needed. Using the same lav mic for wired or wireless scenarios provides a consistent sound quality to a project. It also saves space in my cases as I don't have to carry multiple wired lav systems.

Adds versatility to my mics

By Daniel
Rated 5 out of 5
Date: 2015-12-13

I use this for everything from a Sanken COS-11 to a Tram TR-50. If our Sennheiser G3 systems are getting too much interference (90% of the time), we yank 'em and use this to hard wire the mics. Very simple to use.

When you're sitting at a desk...

By Allen
Rated 5 out of 5
Date: 2020-10-12

A good mic is essential when you're doing things like working remotely through zoom. A lav mic is particularly good because it naturally cuts back on background noise. The remote pack is just an annoyance when you're sitting at a desk though. This adapter nicely solves the problem.

Essential back-up gear

By Kevin
Rated 5 out of 5
Date: 2019-05-27

...or heck, just wire it all when you know you wont be moving and dont want to mess with wireless drop-outs. Nice pad and low cut features vs. some other competing models. If you already have the Sennheiser connector mics, it just plain makes sense to have this in your bag.

See any errors on this page? Let us know


Could this device work with the Sanken COS-11D ...

Could this device work with the Sanken COS-11D Omni Lavalier Mic(B&H # SAC11WNSETRB MFR # SAN-11DWNBKTRSE)? Thanks Renzo
Asked by: Renzo
MZA-900P is listed for compatibility with Sennheiser E 908B, E 908D, HSP 2, HSP 4, ME 2, ME 3, ME 4 and MKE 2 EW Gold microphones. We offer this model for the Sanken COS-11D with the 3.5mm connector for Sennheiser transmitters: B&H # AMEMP3.5
Answered by: David
Date published: 2019-02-12


How is this product different than the Rode VXLR+ ? Voltage ? Impedance ?
Asked by: Don
The Rode VXLR Plus does not provide the same voltage that the Sennheiser provides. The Rode does 3-5v. For example: the Sennheiser ME 2 requires 7.5v. The Rode VXLR Plus would not supply that voltage.
Answered by: Jacob C.
Date published: 2018-08-27

I have a Zoom H6 recorder and want to use it with ...

I have a Zoom H6 recorder and want to use it with the Senheisser MKE-2 lav mic (which needs 7.5V). Would I need to turn the Phantom power on in the recorder to 48V?
Asked by: Peter
I’m using this exact setup. Yes, turn on phantom power, and it will work perfectly!
Answered by: William
Date published: 2020-06-17

I have a MKE 2 EW Gold microphone I would like to ...

I have a MKE 2 EW Gold microphone I would like to convert to XLR. Description says this device works however specs says that it deliver 1.6V of phantom power. The MKE 2 EW Gold requires 7.5 V of power. Does this actually work?
Asked by: David
This adapter will convert a 3.5mm mic with plug-in power, such as the Sennheiser MKE2 to XLR, and allow it to work with 48 V phantom power.
Answered by: Steve
Date published: 2020-08-14


Would this device work with the Countryman b3 Lav Mic mini 1/8 connector for Sennheiser? <a href= target= _blank ></a>
Asked by: mike
This device should work fine with the Countryman B3 (for Sennheiser EW series transmitters).
Answered by: Mark S.
Date published: 2018-08-27

Will this power a Sennheiser MKH 416 to connect ...

Will this power a Sennheiser MKH 416 to connect to a rode wireless go II?
Asked by: Ben
No, the Sennheiser MZA 900 P In-Line Preamplifier and Power Supply for EW Series Microphones will not work to connect a Sennheiser MKH 416 Shotgun Microphone to the Rode Wireless GO II Transmitter. To connect a microphone that requires 48V phantom power to a wireless transmitter, it would be suggested to use a portable phantom power supply such as the Denecke PS-1A Portable Single Channel 48V Phantom Power Supply (BH #DEPS1A) along with an appropriate adapter cable on the supply's XLR output connection:
Answered by: Matt Z
Date published: 2022-05-02


Do this devise will work with Sanken COS-11D XLR conector wired.To connect to Sennheiser G3 wireless system?.I will like to use my wired Sanken for wireless too, do this is possible?
Asked by: Ryszard S.
Hi!I do not know the Sanken COS-11D XLR, but from the specs of the Sanken COS-11D XLR it is clear that the Sennheiser MZA 900 P is not what you are looking for. The Sennheiser MZA 900 P is doing the opposite of what you need.
Answered by: OLAV U.
Date published: 2018-08-27


I have a TRAM TR-50 lav mic that is made to use with the Senn EW100 G3 system. I have teh Senn ME2 as well that came with the G3 kit. I would like to be able to use both the TR-50 and the ME2 wired to my SD-302. Since the TR-50 is wired to work with the G3 I assume this would work to use it wired (in lieu of the TRAM TR 79+ unit for the same purpose). Can anyone who as ACTUALLY done this confirm that it will work? I too assume it will, but would like to hear from someone who has actually done it if at all possible. Thanks!
Asked by: Shane
I know it doesnt work with my Countryman B3. I think it is tuned for the ME2. It clips and distorts with my Countryman. It is possible if the TRAM is similar sensitivity as ME2.
Answered by: Kelly I.
Date published: 2018-08-28
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