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Crestron MMX-6-USB 6-Channel USB Microphone Mixer and Preamp

Crestron part number MMX-6-USB

The Crestron MMX-6-USB is a 6-channel microphone mixer and preamp that connects up to six dynamic or condenser microphones to a USB 2.0 audio system. It also has a balanced line-level output, so it can act as a microphone preamp for audio equipment that has no microphone-level inputs.

Price on request

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Installation and programming

Need it installed? Our Crestron certified engineers install, set up and programme everything we supply. A 4 hour visit is €440 and a full day €880, plus VAT.

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Crestron MMX-6-USB 6-Channel USB Microphone Mixer

About the Crestron MMX-6-USB

Each of the six balanced microphone inputs has its own 48V phantom power switch for condenser microphones, a screwdriver-adjustable level control and a bus assign switch that sends the input to the left, right or both channels of the stereo output. Input and master levels adjust from -80 to +10 dB, and bi-colour LEDs show signal presence and clipping. A 100 Hz low-cut output filter can be switched in.

The mixer has two kinds of output. The USB 2.0 device port connects to a codec, or directly to a Macintosh or Windows PC as an audio input for software applications, and a 5 m (15 ft) Mini-B to Type A cable is included. The stereo line-level output, on a 5-pin terminal block, can be wired balanced or unbalanced to a line-level input on other audio equipment.

The unit uses Crestron's Integrator Friendly Enclosure (IFE) in the medium form factor, in black and blue plastic. It can stand freely, stack with other IFE devices, or mount on a surface or 35 mm DIN rail with the bracket supplied. The RMK-IFE-1U kit, sold separately, fits multiple IFE devices in a 1RU rack space. Power comes from the included PW-1215WU 12 VDC power pack.

Key features

  • Six balanced inputs for dynamic or condenser microphones
  • 48V phantom power, switchable per input
  • Stereo USB 2.0 output for a codec or a Macintosh or Windows PC
  • Balanced or unbalanced stereo line-level output
  • Per-input bus assign to the left, right or both output channels
  • Switchable 100 Hz low-cut output filter
  • Stackable IFE medium enclosure for surface, DIN rail or rack mounting
  • PW-1215WU 12 VDC power pack included

MMX-6-USB specifications

Microphone inputs6 balanced inputs on 3-pin 3.5 mm detachable terminal blocks; -40 dBu (0.008 Vrms) nominal input level
Phantom power48V, switchable per input, with red indicator LEDs
USBUSB 2.0 device port, Mini-B 5-pin female; 5 m (15 ft) Mini-B to Type A cable included
Line outputStereo, balanced or unbalanced, on a 5-pin 3.5 mm detachable terminal block; 200 ohm balanced, 100 ohm unbalanced output impedance
Audio performance48 kHz, 16-bit; 20 Hz to 20 kHz ±0.5 dB; S/N 100 dB; THD+N <-100 dB; crosstalk >70 dB
Level controlsScrewdriver-adjustable, -80 to +10 dB, per input and master
FilterSwitchable 100 Hz low-cut output filter
Power12 VDC 0.5 A from the included PW-1215WU power pack (100 to 240 VAC, 50/60 Hz)
MountingFreestanding, stackable, surface or 35 mm DIN EN 60715 rail with bracket included; rack mount with RMK-IFE-1U (sold separately)
DimensionsHeight 35 mm (46 mm with bracket), width 178 mm (187 mm with bracket), depth 178 mm

Part numbers on this page

Part numberVersionPriceAdd
MMX-6-USB Standard On request

Where the MMX-6-USB is used

  • Meeting rooms feeding wired microphones into a USB codec
  • Rooms that capture microphones into PC software
  • Adding microphone inputs to audio equipment with line-level inputs only
  • Rooms with up to six dynamic or condenser microphones
  • Equipment racks, using the RMK-IFE-1U kit

Works with the MMX-6-USB

Crestron installed by 1Install

We supply, install and programme Crestron in homes and businesses across Ireland. These photos are from our own installations. See more in our projects, or budget a whole system with our Quote Builders for homes and meeting rooms.

Meeting room with dual displays and a Teams Rooms camera in Dublin
Meeting room with dual displays and a Teams Rooms camera in Dublin
Boardroom with large display and ceiling microphones in a Dublin office
Boardroom with large display and ceiling microphones in a Dublin office
Boardroom with conferencing display in Cork
Boardroom with conferencing display in Cork

Questions about the Crestron MMX-6-USB

What is the Crestron MMX-6-USB?

It is a 6-channel microphone mixer and preamp. It takes up to six dynamic or condenser microphones and mixes them to a stereo USB 2.0 output and a balanced analogue line-level output, so the microphones can feed a codec, a computer or other audio equipment.

Does the MMX-6-USB provide phantom power?

Yes. Each of the six microphone inputs has its own 48V phantom power switch, so condenser microphones can be used on any input. The switches are screwdriver-selectable, and a red LED for each input shows when phantom power is enabled.

What can the MMX-6-USB connect to?

Its USB 2.0 device port connects to a codec or to a Macintosh or Windows PC, where the mix is available as an audio input for software applications. The stereo line-level output, balanced or unbalanced, can feed a line-level input on other audio devices, including equipment without microphone-level inputs.

How is the MMX-6-USB powered?

The mixer runs on 12 VDC at 0.5 A from the PW-1215WU power pack, which is included. The power pack accepts 100 to 240 VAC at 50/60 Hz, and a green PWR LED on the mixer shows when it is receiving power.

How can the mixer be mounted?

It uses Crestron's IFE medium form factor. It can be freestanding, stacked with other IFE devices, surface mounted or fitted to a 35 mm DIN rail with the included bracket. For racks, the RMK-IFE-1U kit, sold separately, holds multiple IFE devices in 1RU.

How much is the Crestron MMX-6-USB?

Crestron asks its dealers to give the price of the MMX-6-USB directly rather than publish it online. Add it to your quote list and we will send you a written quote, with delivery, and installation and programming if you need them.

Can 1Install supply, install and programme the MMX-6-USB?

Yes. 1Install is an authorised Crestron Elite Partner with offices in Skerries, Co. Dublin and Cork. We can supply the MMX-6-USB on its own, or install, set up and programme it as part of your system. Installation visits are €440 for 4 hours or €880 for a full day, plus VAT and travel.

Does the MMX-6-USB come with a warranty?

Yes. Everything we supply is new, genuine Crestron with Crestron's standard warranty. If the MMX-6-USB develops a fault, contact us and we will handle the claim with Crestron. If we installed it, our workmanship is guaranteed for the lifetime of the system.

Is the MMX-6-USB in stock?

We order Crestron for each quote, so availability depends on Crestron's stock at the time. We check it before we quote and put the expected delivery date on your quote, so you know where you stand before you pay.

Can I buy the MMX-6-USB without installation?

Yes. We supply Crestron to end users, with or without installation. Like most Crestron devices of this type, it needs setting up or programming before it works in a system, and we can quote for that too.

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