Professional Audio

Q-MOS Stereo Power Amplifiers


This 2U range of power amplifiers is intended for venues where amplifier racks are not on display, and once installed, are out of sight.  The Q-MOS range has all the same reliable attributes as the MA series but the twin VU bargraph and heavy duty laser-cut illuminated front panel and associated components have been removed.  The other components and power levels all remain the same as the MA Series.  These amplifiers are distinguished as a cost effective rack mount solution offering exceptional value for demanding applications where reliability is essential.


  • Balanced line inputs and link sockets. (XLR & 6.35mm jack)
  • Active Clip Limiter internally configurable from off to max
  • Class AB Mosfet output stage
  • Fan cooling with proportional speed fan
  • DC,  thermal and short circuit protection
  • Mains inrush current limiter and soft start
  • Speakon speaker sockets

Q-MOS 500:    250 + 250 watts into 4 ohms,  12.5Kg.
Q-MOS 1000:  500 + 500 watts into 4 ohms,  13.7Kg.
Q-MOS 1300:  650 + 650 watts into 4 ohms,  14.5Kg.
Q-MOS 2000:  1000 + 1000 watts into 4 ohms, 15.6Kg.
Dimensions: 483  x 290 x 89  (2U)


Power Output R.M.S:  as stated above
@ 1KHz into 4 ohms, 70 % into 8 ohms
Frequency Response:   20 Hz – 25 kHz ±0.5dB
T.H.D.@ rated power:  <0.02% @ 1 kHz
Signal to noise ratio:   Better than 100 dB
Channel Separation:   Better than 80 dB
Thermal Protection:   90 deg C
D/C Protection: ±32V
Short circuit protection:   all models
Clip Limiter:    Internal, off to max required SPL
Input Sensitivity:    775 mV / 0dBu
Input Impedance:   10K + 10K (Bal)
Damping Factor:   Better than 400
Slew Rate:  40V / uS
Soft Start:   all models
Mains Inrush Limiting:   650 + 650 W and above
Mains Input Power:   230V ±10% 50-60Hz