The MTX88 is the eight-zone version of the MTX series, containing two balanced microphone inputs with priority function, phantom power possibility and three-band tone control. Four stereo line-level inputs are provided where to any line-level music source such as a CD-player, Tuner or MP3 player, … can be connected. The other two inputs of the matrix are the additional wall panel inputs for both line and microphone signals. 

Crosstalk (@ 1 kHz)-85 dB
ControlFront panel
 TCP/IP (RJ45)
 Wall panel (RS-485)
 Audac Touch™
 Web (Flash)
Socket Connections (AUDAC Touch™)5 sockets
OutputsType8 x Stereo Balanced Line
 Connector3-pin Euro Terminal Block (Pitch – 3.81 mm)
 Impedance51 Ω
 Level-70 dB ~ 0 dB
FrequencyResponse (± 3 dB)20 Hz – 20 kHz
PowerConsumption12 W
 Supply100 ~ 240 V AC / 50 ~ 60 Hz
  24 V DC (emergency Power)
InputsBalanced MicrophoneType2 x Balanced Microphone
  Sensitivity (1W/1m)0 dBV ~ -50 dBV
  Phantom Power15 V DC
  Signal / Noise> 80 dB
  THD+N (@ 1 kHz)< 0.05 dB
 Unbalanced StereoType4 x Stereo Unbalanced Line
  Sensitivity (1W/1m)-14 dB ~ +9 dB
  Signal / Noise> 100 dB
  THD+N (@ 1 kHz)< 0.01 dB
 Wall PanelType8 x Wall panel input
 OtherType1 x Priority mute contacts
OutputsEQTreble± 14 dB (2.5~20 kHz)
  Bass± 14 dB (100 Hz)
InputsBalanced MicrophoneEQHigh± 15 dB (12.5 kHz)
   Mid± 15 dB (2.5 kHz)
   Low± 15 dB (80 Hz)
Dimensions482 x 88 x 335 mm (W x H x D)
Weight4.840 kg
Unit height2 HE

 The MTX can be controlled by means of additional control panels, its fully functional web based interface or the iPhone/ iPad Remote app. The RS232 port makes the MTX compatible with any home & industrial automation systems supporting RS232. 


The front panel of the MTX shows a rotary button per zone with indication LEDs for accessing controls and settings. A built-in PFL loudspeaker makes it possible to pre-listen every channel without the need for a headphone. The balanced line-level zone output connections are performed using 3-pin Euro-terminal block connectors, each of them accompanied with an RJ45 connector for connecting additional wall panels for that zone. 


A 24 volts power connection makes it possible to keep the MTX running on emergency power, even if the main power is shut down.