Why it belongs here

A confident final check before the cart.

Parasound ZoneMaster 4 - Universal 4 Channel 8 Speaker Amplifier The Parasound ZoneMaster 4 (ZM 4) is a compact and powerful 4-channel amplifier ideal for custom home theatre and multi-room audio systems. Delivering up to 150 watts per channel, it supports up to eight speakers across two zones, providing reliable, high-quality sound performance with advanced features. Key Features Power Output: 120 watts x 4 @ 8 Ω, 150 watts x 4 @ 4 Ω or 2 Ω Supports 8 speaker connections (A and B outputs for both channels) High current design ensures stable operation at 2 Ω Class AB input stage combined with premium Class D power stage for efficiency and sound quality Bus input with looping outputs for daisy-chaining multiple amplifiers Independent audio sensing auto-on triggers for each zone 12 volt auto-on trigger inputs for each zone and a master 12V trigger input to control all zones simultaneously Looping 12 volt trigger outputs Speaker level input for expanding systems without pre-out jacks Mono mode combines left and right channels 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 Energy-efficient with 0.5 watt standby power consumption, meeting Energy Star and EU specifications Compact 1U chassis size with included rack mount kit Specifications Power Output – RMS, Both Channels Driven (20 Hz - 20 kHz): 120 watts x 4 @ 8 Ω 150 watts x 4 @ 4 Ω or 2 Ω Minimum Speaker Impedance: A+B outputs of a single channel: 2 Ω Note: Continuous operation at this minimum impedance may require additional ventilation for the amplifier. Frequency Response: 20 Hz - 20 kHz, +0/-0.25 dB 5 Hz - 50 kHz, +0/-3 dB Total Harmonic Distortion: Interchannel Crosstalk: 70 dB at 20 kHz Total Gain: 29 dB (level controls set to maximum) Signal-to-Noise Ratio: >112 dB, input shorted, IHF A-weighted DC Trigger Requirements: +9 Vdc to +12 Vdc, 5 mA Audio Trigger Requirements: 2 mV audio signal AC Power Requirement: 600 watts maximum 60 watts typical (music playing in all zones) 30 watts idle (all zones on) 15 watts idle (one zone on) 100-250 VAC 50/60 Hz (automatic) Dimensions: Width: 17.25" (437 mm) Depth: 14.25" (362 mm) Depth with cables connected: 16" (406 mm) Height with feet: 2.5" (63.5 mm) Height without feet: 1.75" (45 mm), 1U Weight: Net: 12 lbs (5.5 kg) Shipping: 18 lbs (8.2 kg)