Rugged and Simple! - Now with Front Power LED and ability to have both Variable and Constant Level outputs. Constant level output now provides a means to supply the source signal (CD, MP3, IPOD, COMPUTER, MICROPHONE) to a separate Zone or Hearing assist system. If the RAMX2™ volume is adjusted it will not affect the Hearing assist system or vary the volume in another part of the building where the source signal is required.

The Octasound RAMX2 is a easy to operate 2 channel mixer for any sound system. Simply plug in a Microphone, MP3 Player, Laptop, Ipod or CD player, and turn up the volume! The Octasound RAMX2 can be placed anywhere in a facility. Fitting into a standard single gang electrical box. It's unique daisy chain ability allows multiple units to be wired together with only one home run. Saving on wire and installation costs! The RAMX2 can be installed using CAT5 or Shielded based cable with no external adapters required. It's compatible with all previous versions. Built tought for years of service. Older KDM models have lasted 20 plus years in the field. Easy to operate, easy to install.

  • Easy to operate 2 channel mixer
  • Ultra low noise, Interference Resistant, SMT-based design
  • Proprietary Mic Impedance Acceptance Technology
  • Voice filters to enhance speech intelligibility
  • Installs in a standard outlet or electrical switch box
  • Sealed pots and highest quality components throughout
  • Daisy chain up to 3 units for 6 channels
  • Front Power indicator LED.
  • CAT 5 or shielded audio cable based installation
  • Easy to install - strip and insert into the provided plug connectors
  • Double anodized markings will not fade or wear off
  • Compatible with previous versions (MX120A)

RAMX2™ Downloads


A & E

INSTALL INSTRUCTION - V2.0 Power LED on Front Panel

RAMX2™ Applications

  • Arenas ,Gymnasiums, Schools, Restaurants, Bars, Banquet Halls, Cruise Ships, Hotel Conference Rooms, Timekeepers Box, Music Rooms, Stages

RAMX2 Technical Specifications

Microphone Input


50 dB ± 1 dB


± 1 dB 200 Hz to 3 kHz (Voice Enhance Internal Equalizer Response)


Greater than 70 dB S/N (Volume control at maximum position)
Greater than 75 dB S/N (Volume control at 12:00 o’clock)


Less than 0.3% at 1.0 volt output

Input Impedance:

Greater than 2 k ohms for low Z mics, (50 Ohm to 600 Ohm)


Auxilliary Input


17 dB (150 mv to 1.0 v)


± 1 dB 40 Hz to 15 kHz


Greater than 75 dB S/N


Less than 0.3% at 1.0 volt output.



Input Impedance:

Greater than 10k ohm

Output Impedance:

Designed to operate into 600 ohm balanced or unbalanced.

Temperature Range:

-20 °C to 55 °C

Power Required:

Local power via AC/DC adapter (KDM PS12) 12 Vdc / 30 ma.


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