Parasound ZoneMaster ZM4 4-Channel 120W Stereo Power Amplifier

Description

The Parasound ZoneMaster ZM4 is a four-channel stereo power amplifier delivering 120 watts per channel into 8 ohms and 150 watts into 4 or 2 ohms, designed for multi-room, multi-zone, and custom installation applications. Eight speaker connections across A and B outputs for each of the four channels allow up to eight speaker pairs to be driven from a single 1U chassis.

Each zone has its own independent 12V trigger input and audio sensing, so individual rooms can be switched on and off independently. A master 12V trigger input can bring all four zones on or off simultaneously. A bus input with looping outputs allows the ZM4 to receive a source signal and pass it downstream to additional amplifiers without a signal splitter. A speaker-level input enables integration with systems that have no dedicated preamplifier outputs. ProHiFi is an authorised Parasound dealer in India.

The Class AB input stage with premium Class D power stage keeps thermal output low during continuous multi-zone operation. Per-channel level controls, detachable speaker connectors accepting up to 12-gauge wire, mono mode for each zone, and short-circuit and overheat protection with front-panel indicators provide the full feature set for professional and residential installation work. The rack mount kit is included in the box. The power supply accepts 100-250V AC automatically, confirming India 230V mains compatibility.

Why Consider the Parasound ZoneMaster ZM4

The ZM4 is the right choice for multi-room and custom installation applications where four independent zones of stereo amplification need to be powered and controlled from a single 1U rack unit. The per-zone independent trigger and audio sensing allows each room to operate autonomously or all zones to be switched together via the master trigger input. The bus input with looping output, speaker-level input, and eight speaker connections make real-world multi-zone wiring straightforward without additional distribution hardware. Compared to running four separate stereo amplifiers, the ZM4 consolidates zone amplification into one thermally efficient chassis that draws only 60 watts at typical listening levels across all zones.

Ideal Applications

The Parasound amplifier is ideal for multi-room residential installations requiring four independent stereo zones, with individual 12V trigger and audio-sensing controls for flexible power management. Its master trigger allows all zones to be powered on simultaneously, while the speaker-level input supports systems without dedicated preamplifier outputs. It is also well suited for home cinema systems requiring compact amplification for surround and height channels, as well as rack-mounted installations where a single 1U chassis can replace four separate amplifiers, saving valuable rack space.