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Item #: MPA40V
MSRP: $1,650.00


Multi-Channel Amplifier


The MP-A Series music and paging amplifiers build on a 50-year legacy of QSC amplifier dependability and quality. The MP-A Series offers an incredible amount of flexibility for business music and paging applications, while maintaining high efficiency and low total cost of ownership.



  • FlexAmp Technology allows each pair of amplifier channels to deliver up to 400 W total power, in any ratio
  • Class-D output circuitry and switchmode power supply for high efficiency and low cost of ownership
  • 1RU amplifier design for rack space savings
  • Load selector for driving 4 Ω, 8 Ω, 70 V or 100 V on each channel
  • Selectable 80 Hz highpass filter offered on each channel
  • Power saving features - Auto-standby (after 28 minutes with seamless auto-ramp when signal returns) and remote standby input
  • Amp status remote output
  • Rock-solid QSC amplifier dependability


pecifications MP-A20V MP-A40V MP-A80V
Channels 2 4 8

Power (all channels driven)
8 Ω
4 Ω
70 V
100 V

200 W
200 W
200 W
200 W

200 W
200 W
200 W
200 W

200 W
200 W
200 W
200 W

FlexAmp Technology 400 W for a pair of adjacent channels
(1-2, 3-4, 5-6, 7-8)
Frequency Response 20 Hz – 20 kHz +/- 0.5 dB
Signal to Noise > 103 dB
Input sensitivity 1.23 V (+4 dBu)
Gain at 8 Ω 30.0 dB
Output circuitry Class D
Input impedance >10k, balanced or unbalanced
Maximum input level 12.3 V (+24 dBu)

Operating temperature range

Forced air cooling:
Maximum: -10° - 50° C, recommended: 0° - 35° C, reduced performance above 40° C


       Input connectors

       Remote connectors

       Output connectors


Two 3.5mm Euro, 3-pin (green)

One 3.5mm Euro, 5-pin (black)

One 5.0mm Euro, 4-pin (green)

Four 3.5mm Euro, 3-pin (green)

One 3.5mm Euro, 5-pin (black)

Two 5.0mm Euro, 4-pin (green)

Eight 3.5mm Euro, 3-pin (green)

One 3.5mm Euro, 5-pin (black)

Four 5.0mm Euro, 4-pin (green)

Front panel indicators Power, signal (per channel), limit / mute / protect (per channel)
Rear panel indicators Bi-Color LED signal / limit/ mute/ protect 
User-configurable operating
modes (per channel)
DIP switch selectable, low impedance 4 Ω or 8 Ω,
high impedance direct drive 70 V or 100 V
Remote I/O Remote standby, amplifier status enunciation on 3.5 mm connectors
Highpass filter 80 Hz DIP switch engaged per channel
Dimensions 1.75 in x 19 in x 13.6 in (44 mm x 483 mm x 345 mm)
Net weight  7.7 lb (3.5 kg) 9.3 lb (4.2 kg) 12.8 lb (5.8 kg)
Shipping weight 12.3 lb (5.6 kg) 13.9 lb (6.3 kg) 17.4 lb (7.9 kg)
Power requirements Universal power supply (with active power factor correction),
100 – 240 VAC, 50 -60 Hz
Agency approvals UL, CE, RoHS/WEEE compliant,
FCC class B (conducted and radiated emissions)
Carton contents IEC cable, quick start guide, connector pack

Prop 65WARNING: This product contains chemicals including Styrene which is known to the state of California to cause cancer, and Bisphenol A (BPA), which is known to the state of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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