{"product_id":"parasound-zonemaster-450-universal-4-channel-8-speaker-amp","title":"Parasound ZoneMaster 450  - Universal 4 Channel 8 speaker Amp","description":"•The ZoneMaster models are very similar in their feature sets, differing mainly in size and number of channels. \u003cbr\u003e\nLooking for more channels? Try the 1250 or 650. Fewer? 250.\u003cbr\u003e\n•Universal amplifier for applications from 50 to 200 watts\u003cbr\u003e\n•4 speaker connections (not enough room for additional Phoenix connectors on ZM450 rear panel)\u003cbr\u003e\n•High current for stable operation at 2 Ohms\u003cbr\u003e\n•Channel pairs are bridgeable for up to 200 watts @ 4 Ohms\u003cbr\u003e\n•Class AB input stage plus premium Class D power stage\u003cbr\u003e\n•Independent audio sensing triggers, one for each zone\u003cbr\u003e\n•2 Independent 12 volt trigger inputs, one for each zone \u003cbr\u003e\n•Looping 12 volt trigger outputs for each zone\u003cbr\u003e\n•Master 12 volt trigger input to turn all zones on-off\u003cbr\u003e\n•Speaker level input for expanding systems w\/out pre out jacks\u003cbr\u003e\n•Bus loop output jacks for passing audio to another amp\u003cbr\u003e\n•Mono mode combines L and R for single speaker applications\u003cbr\u003e\n•Separate level controls for all four channels\u003cbr\u003e\n•Detachable speaker connectors accept up to 12 gauge wire\u003cbr\u003e\n•Short circuit and overheat protection with front panel indicators\u003cbr\u003e\n•0.9 watt standby power consumption meets Energy Star \u0026amp; EU specs\u003cbr\u003e\u003cbr\u003e\n \nZoneMaster 450 Specific Features:\u003cbr\u003e\n•Compact 1u, 1\/2 width chassis size\u003cbr\u003e\n•Rack mount kit sold separately (click to view)\u003cbr\u003e\n•Does NOT have A\/B outputs (no room on the rear panel for connectors) but is 2 Ohm stable\u003cbr\u003e\u003cbr\u003e\n\nTechnical Specifications:- \u003cbr\u003e\n\nPower Output:\u003cbr\u003e\nRMS, All Channels Driven (20 Hz - 20 kHz) \u003cbr\u003e\n50 watts x 4 @ 8Ω \u003cbr\u003e\n90 watts x 4 @ 4Ω or 2Ω \u003cbr\u003e\n160 watts x 2 @ 8Ω (Bridged) \u003cbr\u003e\n200 watts x 2 @ 4Ω (Bridged)\u003cbr\u003e\u003cbr\u003e\n \nFrequency Response: \n10 Hz - 60 kHz, +0\/-3 dB\u003cbr\u003e\n \nTotal Harmonic Distortion: \u003cbr\u003e\nLess than 0.05% at typical listening levels \u003cbr\u003e\nLess than 1.0% at full power\n \u003cbr\u003e\u003cbr\u003e\nInterchannel Crosstalk:\n70 dB at 20 kHz\u003cbr\u003e\u003cbr\u003e\n \nInput Sensitivity: \u003cbr\u003e\n700mv = Full output (50 Watts @ 8 Ω) \u003cbr\u003e\nTotal Gain = 29 dB (Level controls set to Maximum)\u003cbr\u003e\u003cbr\u003e\n \nS\/N Ratio:\nGreater than 112 dB, input shorted, IHF A-weighted\u003cbr\u003e\n \nDC Trigger Requirements: \n+9 Vdc to +12 Vdc, 2 mA\u003cbr\u003e\u003cbr\u003e\n \nAudio Trigger Requirements: \n2 mV Audio Signal\u003cbr\u003e\u003cbr\u003e\n \nAC Power Requirement: \u003cbr\u003e \n500 Watts Maximum \u003cbr\u003e\n30 Watts Typical \u003cbr\u003e\n15 Watts Idle (All Zones on) \u003cbr\u003e\n7.5 Watts Idle (One Zone on) \u003cbr\u003e\n0.9 Watts Standby \u003cbr\u003e\n110-130 VAC 60 Hz or 220-255 VAC 50 Hz \u003cbr\u003e\nNote: AC mains voltage is set only by qualified electronics technician.\u003cbr\u003e\u003cbr\u003e\n \nDimensions: \u003cbr\u003e \nWidth: 8.5\" (220 mm)\u003cbr\u003e \nDepth: 10\" (254 mm) \u003cbr\u003e\nHeight, with feet: 2\" (51 mm) \u003cbr\u003e\nHeight, without feet: 1.75\" (45 mm), 1U\u003cbr\u003e\u003cbr\u003e\n \nWeight:  \u003cbr\u003e\n Net: 4.5 lbs (2.0kg) \u003cbr\u003e\n Shipping: 7.5 lbs (3.4kg)\n\n\n \n\n\n \n","brand":"Parasound","offers":[{"title":"Default Title","offer_id":57412855759180,"sku":"PARASOUNDZM450","price":666.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Parasound-zonemaster-450.jpg?v=1777537420","url":"https:\/\/www.stoneaudio.co.uk\/products\/parasound-zonemaster-450-universal-4-channel-8-speaker-amp","provider":"Stone Audio","version":"1.0","type":"link"}