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Parasound ZoneMaster450 Four Channel Power Amplifier
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Parasound ZoneMaster450 Four Channel Power AmplifierParasound ZoneMaster450 Four Channel Power AmplifierParasound ZoneMaster450 Four Channel Power Amplifier

Parasound ZoneMaster450 Four Channel Power Amplifier

£707.50 Exc. VAT |  


Parasound ZoneMaster450 Four Channel Power Amplifier

The ZoneMaster450 high-performance amplifier in Parasound’s ZoneMaster™ line combines legendary Parasound Class AB sound quality with the most reliable Class D power modules in the industry, setting a new standard in residential and commercial amplification.


  • Our ZoneMaster models are very similar in their feature sets, differing mainly in size and number of channels. 
  • Looking for more channels? Try the 1250 or 650. Fewer? 250.
  • Universal amplifier for applications from 50 to 200 watts
  • 4 speaker connections (not enough room for additional Phoenix connectors on ZM450 rear panel)
  • High current for stable operation at 2 Ohms
  • Channel pairs are bridgeable for up to 200 watts @ 4 Ohms
  • Class AB input stage plus premium Class D power stage
  • Independent audio sensing triggers, one for each zone
  • 2 Independent 12 volt trigger inputs, one for each zone
  • Looping 12 volt trigger outputs for each zone
  • Master 12 volt trigger input to turn all zones on-off
  • Speaker level input for expanding systems w/out pre out jacks
  • Bus loop output jacks for passing audio to another amp
  • Mono mode combines L and R for single speaker applications
  • Separate level controls for all four channels
  • Detachable speaker connectors accept up to 12 gauge wire
  • Short circuit and overheat protection with front panel indicators
  • 0.9 watt standby power consumption meets Energy Star & EU specs
  • ZoneMaster 450 Specific Features
  • Compact 1u, 1/2 width chassis size
  • Rack mount kit sold separately
  • Does NOT have A/B outputs (no room on the rear panel for connectors) but is 2 Ohm stable

Power Output
RMS, All Channels Driven (20 Hz - 20 kHz)
50 watts x 4 @ 8Ω 
90 watts x 4 @ 4Ω or 2Ω 
160 watts x 2 @ 8Ω (Bridged) 
200 watts x 2 @ 4Ω (Bridged)

Frequency Response 
10 Hz - 60 kHz, +0/-3 dB

Total Harmonic Distortion 
< 0.05% at typical listening levels 
< 1.0% at full power

Interchannel Crosstalk 
70 dB at 20 kHz

Input Sensitivity: 
700mv = Full output (50 Watts @ 8 Ω) 
Total Gain = 29 dB (Level controls set to Maximum)

S/N Ratio 
> 112 dB, input shorted, IHF A-weighted

DC Trigger Requirements 
+9 Vdc to +12 Vdc, 2 mA

Audio Trigger Requirements 
2 mV Audio Signal

AC Power Requirement: 
500 Watts Maximum 
30 Watts Typical 
15 Watts Idle (All Zones on) 
7.5 Watts Idle (One Zone on) 
0.9 Watts Standby 
110-130 VAC 60 Hz or 220-255 VAC 50 Hz 
Note: AC mains voltage is set only by qualified electronics technician.

Width: 8.5" (220 mm) 
Depth: 10" (254 mm) 
Height, with feet: 2" (51 mm) 
Height, without feet: 1.75" (45 mm), 1U

Net: 4.5 lbs (2.0kg) 
Shipping: 7.5 lbs (3.4kg)

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01733 350 878
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