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Revox modularity
A system that grows with your requirements.

The future is built into the design principle

While other systems only ever offer the last state-of-the-art technology, in other words technology that is already old, the future is built into the design principle of the M51. After all, the M51 is designed to grow with your requirements. New functionalities can be continuously integrated through new modules, very simply, through plug-&-play. Tomorrow or several years down the road and always reflecting the current state-of-the-art technology.

M51 Multiuser Modul
M51 Multiuser Modul

Multiuser module

The M51 Multiuser module allows the integration of a M51 into the Multiuser system. CD player, FM tuner and analogue M51 sources (i/o module) can be played back in all rooms. The M202 Ethernet interface is not required for the control over the Multiuser app. Decoder ACCII or ACCIII in the M51 preconditioned.

The advantages of the integration into the Revox Multiuser system at a glance.

Multimedia module
Multimedia module

Multimedia module - Gateway to the multimedia world

With the Multimedia module Revox offers an attractive interface into the audio streaming world. The home network allows the connection of the multimedia module via LAN or WLAN and thus access sources such as internet radio or via UPnP a private music archive - e.g. on the Revox Joy audio server.
Moreover, depending on the multimedia module version, USB storage devices and/or iPods can be connected and be browsed - the iPods of course in the familiar Apple navigation structure.
The Revox App M232 for iOS devices and M235 for Android products enable intuitive browsing of the different titles or internet radio stations.

FM tuner module
FM tuner module

FM tuner module - Always on station

The Re:source tuner module is designed to receive FM radio stations and is characterised by its excellent reception properties. Up to 50 stations can be stored in the memory in any order using their RDS identifier or an individually assigned name. By deploying up to four tuner modules in the Re:system M51 or M10, up to four different radio stations can be listened to simultaneously within a Revox Multiroom System.

FM tuner IO module
FM tuner IO module

FM tuner I/O module

The FM Tuner I/O module combines the functionality of an FM Tuner with 3 analogue audio inputs and one analogue audio output. Traditional sources such as cassette players can be connected alongside iPods, for example. The output can be used for audio recordings or also for transmitting signals on to another amplifier. The individual sources can also be given individual names, which makes recognising the assignment of an input simple by giving it the name of the product that is connected to it, e.g. "iPod" or "Sat".

I/O module
I/O module

I/O module - Open for everything

The Re:source in/output module offers four analogue audio inputs and one audio output. This enables external devices to be integrated tonally into the Revox system. If required, input 1 can simply and quickly be converted to allow a record player to be connected. All the inputs on this module can be given the name of the currently assigned source through the menu, e.g. Play Station or MP3 Player. Each input can be individually levelled out so that the volume level stays the same when switching between sources and doesn’t have to be adjusted.

Multiroom module
Multiroom module

Complete freedom of movement

The Re:source Multiroom module makes the Re:system M51 or M10 the centre of a Revox Multiroom System. Using the module, all analogue sources connected to the system can be distributed over four different listening zones. Within each listening zone, the programme can be transmitted into as many as four rooms and for each room, up to four timer events can be set up. This enables a wake-up call in any room at any time or entertainment with the desired programme at the required time.

Multiroom slave module
Multiroom slave module

Multiroom slave module - Surround sound wherever you are

The Re:source multiroom slave module is used where a multichannel audio reproduction is needed for additional rooms. In this case, the M51 with Multiroom slave module operates as a multi-channel room amplifier with integrated DVD player. It is connected to the Multiroom Module in the central Re:system controller and imports the signals from there. Furthermore, the M51 with Multiroom slave module enables true Home Cinema surround sound, even in the additional room, through the integrated DVD player or a local SAT receiver.

Communication module
Communication module

Communication module

The communication module is available in several versions - from the control of the Revox M37 audio server to the connection of the Kaleidescape audio/video server to the connection of selected CD players numerous possibilites are available to integrate this module and to recall the named sources even from the side room.

Request programmes, 24/7

The Re:source KaleidescapeTM module integrates the KaleidescapeTM video server in the Revox system. The server audio content can be shown on the displays and called up very simply. The films stored on the server can be selected through an intuitive OSD on the television. The perfect, simple to operate Home Cinema experience is a result of the system’s friction-free task division. The image data is distributed through the KaleidescapeTM World. Revox handles the processing and the complete control of the audio signals.

CD enjoyment in all rooms

If you just fancy listening to your favourite hits from time to time - no problem. With Revox Multiroom systems and the Re:system M51 or M100 as control units, you can access a CD in your device's drive from every room in the house. This is now also possible for systems based on the M10 without a CD drive. Thanks the Revox CD control module, it is possible to control the CD player from the Revox Joy series. You can see which track is currently playing through the Revox wallmounted display.

DVD module
DVD module

DVD Module - Picture and sound

The Re:source dvd module is the audio and video interface for the DVD drive that is integrated in the M51. High-quality video drivers ensure an excellent picture, which consistently receives critical acclaim as being one of the best on the market. At the same time, the module offers the analogue audio input for the sound signal from a potential TV device. As a true all-rounder, the DVD module can read CDs and DVDs including different ROM formats as well as MP3, JPEG and DIVX formats. The DVD module is available with SCART or Cinch connectors for connection to the picture reproduction device.

Scaler module
Scaler module

Scaler module - See better

As an optional add-on to the DVD module, the Re:source dvs module scales up the standard video signal to high-resolution formats, as high as 1080p. This enables the currently highest possible Full HD resolution. Because of the high level of integration in the controller, all signals are transmitted exclusively digitally and with extremely short signal paths. This gives Revox an advantage over external scalers that can’t offer this feature.

The signal is made available to the TV or projector by a HDMI or a component jack.

Decoder module
Decoder module

Audiophile standard for home cinema

The Re:source decoder module decodes the different audio formats for the Re:system M51, so that both stereo and surround formats can be played through the M51. One particular feature is the X-stereo function that enables the use of four speakers, even with pure stereo operation, which is the case well over 90 % of the time. The module gives music lovers the option of pure analogue listening. In this case, the digital signal processor is switched off and the music can be experienced in its purest form, just as the sound engineer mixed it.

This module can also be operated in a M10 and enables the supply of the Multiroom audio signals to home cinema amplifiers of other providers.

Technical data

Re:source multimedia

Internetradio (WMA,MP3 Streams und MMS)

Radio station database (vTuner)
Playlist (ASX, M3U, PLS)
MP3, AAC (up to zu 320 kbps, CBR/VBR),
ConnectivityWLAN, LAN, RJ45 for iPod
Re:source tuner
Frequency range87,50 - 108,00 MHz
Unweighted S/NMono, 30 dB µV - 50 dB S/N
Stereo, 44 dB µV - 50 dB S/N
Mute threshold 30 µV
Selectivity60 dB at 300 kHz
Max. distortion<0,1 %
Frequency response30 Hz - 15 kHz
Crosstalk> 48 dB
Re:source tuner + in/output
Frequency range87.50 - 108.00 MHz

Low noise separation stereo

-50 dBr  42 dBµV
-56 dB   65 dBµV
Mute threshold20 dB µV
Max. distortion< 0,15 % Mono
Frequency response40 Hz - 16 kHz +/- 1.5 dBr
Crosstalk> 44 dB
Max. Input voltage2 Volt eff.
Input impedance100 kOhm
Crosstalk> 80 dB
THD< 0,009 % 1,4 V
Re:source in/output
InputsAUX1 (Line) 500 mV / 10 kOhm
AUX1 (Phono MM) 5mV / 47 kOhm / 100pF
AUX1 (Phono MC) 500 mV / 10 kOhm
AUX1-3 (Line), Record In 500 mV / 10 kOhm
OutputRecord Out 2 V / 470 Ohm*
Unweighted S/NAUX 1-3, Record In 92 dBA / 0,5 V
Phono-MM 78 dBA / 5 mV
Phono-MC 75 dBA / 0,5 mV
Channel separation80 dB
Re:source multiroom
max. cable length to the room amplifier 100m
Cable typeRevox Multiroom cable or CAT7 / SSTP
cable ISO / IEC 11801
Number of timer events4 for each room
Number of zones4
Remote rooms per zone4 in special cases up to 8
Max. number of remote rooms16, in special cases up to 32
Audio levelBalanced 1 Volt at 50 Ohm (-6 dB at digital 0)
Harmonic distortion0,01 % (-6 dB at digital 0)
Re:source DVD Scart
Playable formatsDVD-Video (Single and Dual Laye)
Video-CD (VCD) + Super Video CD (S-VCD)
Audio CD (incl. CD-R and CD-RW)
MP3-CD (incl. CD-R and CD-RW)
JPEG (incl. CD-R and CD-RW) 
PAL (Europe) 50 Hz / 625 lines
NTSC (USA) 60 Hz / 525 lines
Digital OutPCM (Optical TOSLINK 16,20,24 Bit SPDIFF up to 96 kHz)
Re:source DVD RCA
Playable formatsDVD-Video (Single- and Dual Layer)
Video-CD (VCD) + Super Video CD (S-VCD)
Audio CD (incl. CD-R und CD-RW)
MP3-CD (incl. CD-R und CD-RW)
JPEG (incl. CD-R und CD-RW)
PAL (Europe) 50 Hz / 625 Zeilen
NTSC (USA) 60 Hz / 525 Zeilen
Digital OutPCM (Optical TOSLINK 16,20,24 Bit SPDIFF up to 96 kHz)
Re:source dvs
Video outputDOUBLING (576p / 480p PAL /NTSC)
HDTV 720p (1280 x 720p 50 / 60 Hz PAL /NTSC)
HDTV 1080i (1920 x 1080i 50 / 60 Hz PAL /NTSC)
HDTV 1080p (1920 x 1080p 50 / 60 Hz PAL /NTSC)
Analogue YUV output10 Bit, 108 MHz (576p / 480p)
- Automatic colour optimising via HDMI in digital 8 bit RGB or digital 10 bit YUV
- Automatic recognition of DVI and HDMI monitors
- HDCP-compatible encoding
- Perfect, pixel precise HDTV scaling
- Perfect illumination resolution up to 6,75 MHz
- Perfect colour resolution up to 3,375 MHz
Re:source communication audio server
Audio connectionZone 1-4 Audio In
Data connectioRS232 communication
Max. cable length 10m
Re:source communication video server
Audio connectionsZone 1, Zone 2, Zone 3 and Zone 4 audio in
Digital data connectionsRS232 Kaleidescape music player
Max. cable length 10 m
Re:source communication SAT
Audio connectionZone 1-4 Audio In
Data connectionRS232 communication
Max. cable length 10 m
Re:source communication CD
Audio connectionAux 1-3 Audio IN 
CD Audio IN
Daten VerbindungRS232
Max. 10 m cable length
Re:source multiroom slave
Frequency response20 Hz - 20 kHz (+1dB /-2 dB)
Distortion factor0,02 % (bei 1 kHz)
Unweighted S/N- 80 dB
Channel crosstalk- 85 dB
Special featureElectrically isolated without grounding of audio signals (inductive transformer and data transfer opto-coupler)
Re:source Decoder module
FormatsDolby Prologic, Dolby Digital (AC3)
MPEG 1 Layer 2, MPEG 2
Inputs Digital In 1 SPDIFF 32; 44,1; 48 kHz Coaxial
Digital In 2 SPDIFF 32; 44,1; 48 kHz Coaxial
Digital In 3 SPDIFF 32; 44,1; 48 kHz Optisch
Analogue outputsFront L/R 1,75 V /100 Ohm (All based on 0 dB FS)
Sub / Center 1,75 V / 100 Ohm (All based on 0 dB FS)
Rear L/R 1,75 V / 100 Ohm ( All based on 0 dB FS)
Harmonic distortionPure analog 0,006 % / 92 dB CCIR-ARM
Dolby Digital 0,009 % / 90 dB CCIR-ARM

FAQ - Häufig gestellte Fragen

Where to plug my subwoofer? (Decoder module)

The decoder module provides 6 analogue audio outputs. The output marked with SUB is the pre-amplifier output which can be used for an active subwoofer.

How many multiroom modules can be operated in a M51/M10?

Only 1 multiroom module can be operated.

In which slot does the multiroom module belong?

The multiroom modul must be in slot 5.

Can I connect a record player to the I/O module?

The factory-setting of the AUX1 input is configured as Line In input. If required this input can be reconfigured to Phono MM or Phono MC, so that a record player can be connected.
For this setting the module must be unplugged and some switches on the module be configurated. Please find details in the manual.

Why does my „Fritzbox“ does not asign an IP adress to my Multimedia Module, neither via DHCP nor with a manual IP?

The LAN Ports of the “Fritzbox” are set on “auto” by default setting. This means the Ports are turned off and only when there is data traffic the Ports are turned back on automatically. This “Wake-Up-Function” does not work reliable with Multimedia products. Please set the LAN Ports on “active” in the setup menu of the “Fritzbox”.

How many Multimediamodules can I operate in a M51 or a M10?

In the M51 you can only operate one Multimediamodule. The M10 does not have this limitation.

How much external memory can I connect to the Multimediamodule?

On the USB connection of the Multimediamodules you can connect USB sticks and hard discs up to FAT 32. Do you need more memory, we recommend the operation of a NAS memory (network hard disc).

Why does the multimedia module not activate the alarm, even though I have set a timer?

In a first step please check whether the multimedia module is mapped on one of the buttons Tuner, CD/DVD or AUX 1, because only these sources can be chosen by the timer. Tuner and CD normally always work, but with the multimedia module it can happen that the last content is not available anymore, because the source has been deleted or the audio stream is not working . Since software MMM+3 2.06 Revox offers a secure solution, so that you are definitely woken up. Initially the module looks for the radio station which was listened to last. If for some reason this radio station is not available, the multimedia module works through the “My Music” list. If there is no music available, the multimedia module selects music from an USB Stick, which needs to be plugged in and contain music in mp3 format in the root directory. So the timer will work properly now, even if there is a problem with the Internet connection.

I cannot play the music from my iPad with the multimedia module.

Due to the system this is currently not possible.

Which iPhones and iPods can I use with the multimedia module?

The multimedia module is compatible with current iPhones and iPods – an exception is the iPod shuffle.

Why does my Multimedia module not recognize my Router?

Please do not use the space or any special characters for naming the network for the WLAN. This could lead to difficulties in recognizing the Router.

What can I do when I do not get a connection to the Internet? (Multimedia module)

Please check in the Setup menu of the Multimedia module whether the MMM was assigned by an IP address. In a first step restart the MMM. Should the MMM still not have an IP address, it is possible that the router does not support DHCP.
Deactivate the DHCP modus and assign an IP address manually.

Which software version does my system need to be able to operate a Multimedia module?

The Multimedia module works only in a system with software version 2.0 or higher.

Should I connect the WLAN antenna even though a LAN cable is used? (Multimedia module)

As soon as a network cable is connected to the Multimediamodule, the WLAN is deactivated. You should still screw the added antenna on the module, because otherwise it is very likely to lose it.

Why does my WLAN not work? (Multimedia module)

The WLAN is turned off, as soon as the LAN cable is plugged in. This makes sure, that no unnecessary radiation is occurring.

The latest MMM supports the WEP, WPA and WPA2 coding. 


17.01.19 Download

User manual multimedia module

User manual of the M51/M10 multimedia module (3MB)

17.05.17 Download

Revox Multiuser brochure

Revox Multiuser brochure english. (2MB)

17.05.17 Download

Revox Joy brochure

Revox Joy brochure (1MB)

17.05.17 Download

Revox speakers brochure

Revox speakers brochure (2MB)

03.11.14 Download

User manual CD module Joy

User manual of the communication module CD Joy (1MB)

29.10.14 Download

User manual CD module Oppo

User manual of the M51/M10 CD module for Oppo devices (808kB)

19.05.14 Download

User manual multiroom slave module

User manual of the M51/M10 multiroom slave module (372kB)

19.05.14 Download

User manual decoder module

User manual of the M51/M10 decoder module (583kB)

19.05.14 Download

User manual SAT module

User manual of the M51/M10 SAT module (340kB)

19.05.14 Download

User manual video server module

User manual of the M51/M10 video server module (1MB)

19.05.14 Download

User manual audio server module

User manual of the M51/M10 audio server module (409kB)

19.05.14 Download

User manaul DVS module

User manual of the M51/M10 DVS module (191kB)

19.05.14 Download

User manual DVD module

User manual of the M51/M10 DVD module (3MB)

19.05.14 Download

User manual tuner i/o module

User manual of the M51/M10 tuner i/o module (484kB)

19.05.14 Download

User manuel multiroom module

User manual of the M51/M10 Multiroom module (1MB)

19.05.14 Download

User manual i/o module

User manual of the M51/M10 i/o module (228kB)

19.05.14 Download

User manual tuner module

User manual of the M51/M10 tuner module (459kB)

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