MX54s Promix Plus

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SKU: ROL-MX54S Category:


MX54s Promix Plus


The MX54s Pro-Mix Plus mixes three microphones into two transformer balanced outputs. It has three XLR inputs, each with individually switchable phantom power, and Low Cut (100 Hz high pass filter) switches, a Level control, and a Pan control. As mentioned, it has two transformer balanced, XLR outputs. A 1/4 inch Aux/Headphone output has been provided along with a Clip indicator, Power indicator, and Power switch. The unit is also powered by two 9-Volt alkaline batteries.



  • Mixes three microphones to stereo XLR outputs
  • Output level controls for mic or line-level output
  • Transformer isolated outputs
  • Phantom Power and Low-Cut switches for each Mic input
  • Battery and AC powered
  • Handy shoulder strap mounts
  • Switchable Low Cut filter (100 Hz high pass) for each channel



Input Impedance 600 Ohms
Output Impedance XLR 600 Ohms
THD + Noise .02%
S/N Ratio 84 dB
Frequency Response 25 Hz - 16 kHz (+0 / -3 dB)
Max Output Level + 14 dB
Max Input Level -14 dB
Max Gain +60 dB
Low Cut -3 dB @ 100 Hz
Current Draw 20 mA
Phantom Power +18 VDC
Connectors: 3: Female XLR, 2: Male XLR, 1: 1/4" TRS, DC Power Jack
Size: 5.3" x 3.7" x 2"
Weight:1 lbs.
Current drain 15ma nominal one mic 15vdc