Hifonics ZG-600-4 Zeus Gamma 4-Channel Car Amplifier

The Hifonics ZG-600.4 Zeus Gamma is a four-channel Class A/B car amplifier designed to add dedicated power to an aftermarket speaker system. It supplies four channels for front and rear speakers, making it suited to drivers who want more output and control than a head unit can provide. Its full-range, bridgeable configuration also supports flexible system planning.

At 4 ohms, the amplifier is rated at 75 watts per channel across four channels. It is also rated for 150 watts per channel at 2 ohms, allowing it to match many aftermarket speaker configurations. For systems that need fewer, more powerful channels, it can be bridged to provide 300 watts across two 4-ohm channels.

The ZG-600.4 covers a 10 Hz to 22 kHz frequency response, supporting both low-frequency extension and high-frequency detail within a full-range system. Variable high-pass and low-pass crossovers help direct the appropriate frequency range to connected speakers. A built-in bass control and adjustable bass boost provide additional low-frequency tuning options.

Its Class A/B amplifier design is paired with a PWM MOSFET power supply for stable power conversion. The amplifier uses an aluminum heat sink to help manage operating heat during use. Nickel-plated RCA inputs, speaker-level inputs, and angled terminals support common aftermarket integration methods.

This amplifier can serve as the foundation of a four-speaker upgrade or as a two-channel bridged amplifier for compatible 4-ohm loads. Use it with a properly matched vehicle electrical installation, fused power wiring, and speakers that can handle its rated output. Its crossover controls make it practical for running full-range speakers, component systems, or selected bridged applications.

Key Features

Four-Channel Output: Powers front and rear speakers from one amplifier.

75W x 4 at 4 Ohms: Provides rated four-channel output for compatible speakers.

2-Ohm Capability: Delivers up to 150 watts per channel.

Bridgeable Channels: Configures as two 300-watt channels at 4 ohms.

Variable Crossovers: Helps tailor high-pass or low-pass frequency routing.

Speaker-Level Inputs: Supports integration with compatible factory audio systems.

Design & Installation

The ZG-600.4 uses an aluminum heat sink, PWM MOSFET power supply, nickel-plated RCA inputs, and angled connection terminals. Its Class A/B design is intended for four-channel, full-range car-audio operation. The compact chassis measures 10.25 inches long, 8.25 inches wide, and 2.375 inches high.

Mount the amplifier to a secure location with adequate ventilation and keep power, signal, and speaker wiring properly routed. Use 4 AWG power and ground connections, a 40A fuse, and up to 12 AWG speaker wire as specified. Set gain and crossover controls to suit the connected speakers, and use only 4-ohm loads when bridging channels.