Protection of amplifiers: short circuit, open circuit, thermal, ultrasonic and RF protection stabilized.
Independent clip limiters. Selectable low frequency filters, choice of 30 or 50hz.
Dual stereo channel input parallel with bridged mono mode.
Balanced XLR inputs.
Binding Post outputs and SPEAKON NEUTRIK.
Inner panel with LED signal indicators.

QMX-900
8 ohm per channel: 200Wx2
4 ohm per channel: 300Wx2
Bridge Mono 8 ohm: 430W
Frequency Response: 20Hz - 20 Hz(-3dB)
Total Harmonic Distortion (THD): <0.01%
Imput Impedance: 10kohm unbalanced -20kohm balanced
Sensitivity: >102dB
Crosstalk: >60dB
Siewrate: 35V/us (stereo)
Limiter Compression Rate: 20:1
Damping Factor : >350@8ohm
Voltage Range: 220V 50 Hz
Dimensions: 483x449x89 mm
Weight: 17 kg

QMX-1500
8 ohm per channel: 280Wx2
4 ohm per channel: 450Wx2
Bridge Mono 8 ohm: 700W
Frequency Response: 20Hz - 20 Hz(-3dB)
Total Harmonic Distortion (THD): <0.01%
Imput Impedance: 10kohm unbalanced -20kohm balanced
Sensitivity: >102dB
Crosstalk: >60dB
Siewrate: 35V/us (stereo)
Limiter Compression Rate: 20:1
Damping Factor : >350@8ohm
Voltage Range: 220V 50 Hz
Dimensions: 483x449x89 mm
Weight: 18 kg

QMX-1900
8 ohm per channel: 430W
4 ohm per channel: 880W
2 ohm per channel: 1850x2
Bridge Mono 8 ohm: 1250W
Frequency Response: 20Hz - 20 Hz(-3dB)
Total Harmonic Distortion (THD): <0.01%
Imput Impedance: 10kohm unbalanced -20kohm balanced
Sensitivity: >102dB
Crosstalk: >60dB
Siewrate: 35V/us (stereo)
Limiter Compression Rate: 20:1
Damping Factor : >350@8ohm
Voltage Range: 220V 50 Hz
Dimensions: 483x449x89 mm
Weight: 21 kg

QMX-2500
8 ohm per channel: 600Wx2
4 ohm per channel: 1150Wx2
2 ohm per channel: 1650x2
Bridge Mono 8 ohm: 1350W
Frequency Response: 20Hz - 20 Hz(-3dB)
Total Harmonic Distortion (THD): <0.01%
Imput Impedance: 10kohm unbalanced -20kohm balanced
Sensitivity: >102dB
Crosstalk: >60dB
Siewrate: 35V/us (stereo)
Limiter Compression Rate: 20:1
Damping Factor : >350@8ohm
Voltage Range: 220V 50 Hz
Dimensions: 483x449x89 mm
Weight: 24 kg