Specifications
Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Voice 856-719-9900 | Fax 856-719-9903 | www.
  audio.com 
programmed for microphone level output. 
A HEADPHONE switch selects either full program or split program and cue. A recessed, 
thumbnail operated headphone level control minimizes panel clutter and once set, tracks 
the MASTER output. A pre-fader cue from input one or an external director’s CUE 
INPUT from a rear panel jack feed the headphone cue circuit thru an internal trimpot. 
An EXPANSION INPUT to the mixing buss allows interconnection of two mixers or the 
addition of one or more companion XP100 Mic/Line Input Expanders. All panel controls 
and connectors are clearly labeled. 
MX100, MX100C STUDIO MIXERS 
Both the MX100 and the MX100C also provide three inputs with front panel selection of 
microphone or line input levels. Phantom power and input stage gain is dipswitch 
programmable for any input. Phantom power is disabled in the line input mode. The 
MASTER level control feeds a high level output stage which comfortably drives either 
balanced or unbalanced output loads of 600 ohms or greater. A bright LED VU meter and 
headphone amplifier monitor the program output. The output may be set to line or 
microphone level by moving an internal jumper plug. The MX100C adds a switched low 
distortion compressor / limiter and a peak indicating LED to the basic MX100 Mixer. A 
rear panel Expander input allows interconnection of two mixers or the addition of one or 
more companion XP100 Input Expanders. 
XP100 INPUT EXPANDER 
The XP100 Input Expander provides an additional four MIC/LINE switchable inputs and 
plugs into the Expansion Buss input of the mixer. 24V phantom power is available for 
each input via internal jumper plug selection. The XP100 inputs provide a fixed 40dB 
microphone gain and unity (0dB) gain for line inputs. The XP100 is supplied with 
interconnecting expansion cables for the audio and DC connections to the MX101, 
MX100 or MX100C. 
POWER 
A mixer and up to two companion XP100s can comfortably share a single external 
WA100, 24VDC / 400mA. wall mount AC/DC power supply. A mixer and a single 
expander can be powered from a DCA100 DC converter or a PPA-1 or 2 rechargeable 
battery packs. 
MOUNTING 
Up to three amps will mount side-by-side in only one rack unit high using the available 










