Description
Hifonics ZD-750.4D
The Hifonics ZD‑750.4D is a Class D 4‑channel car audio amplifier from the Zeus Delta (ZD) Series, engineered to deliver efficient and powerful sound for full‑range speaker systems. With high‑efficiency design, flexible variable crossovers, and protection circuitry, it’s suitable for daily audio builds and can be bridged for small subwoofer use.
Specifications
| Category | Specification |
|---|---|
| Type | Amplifier |
| Brand | Hifonics |
| Series | ZEUS DELTA |
| Category (Use) | Mobile |
| Condition | New |
| Color | Black |
| Warranty | 1 Year |
| Compatible Vehicles | Universal |
| Amp Class | Class D |
| Total Channels | 4 |
| Max Power (Watts) | 750 |
| Power @ 2 Ohms (ch x watts) | 4 x 175 |
| Power @ 4 Ohms (ch x watts) | 4 x 100 |
| Mono Bridged @ 4 Ohms (ch x watts) | 2 x 375 |
| Amp Crossover | Variable Electronic 12dB Per Octave |
| Variable High Pass Crossover | 50Hz – 250Hz |
| Variable Low Pass Crossover | 50Hz – 250Hz |
| Tone Control / Parametric EQ | Built-in Bass Control |
| Variable Voltage | 0.2 – 6V |
| Frequency Response | 10Hz – 22kHz |
| Total Harmonic Distortion (THD) | < 0.5% |
| Speaker Level Audio Inputs | Yes |
| Power Terminal 12V/GND | 4 AWG |
| Speaker Terminal Wire Gauge | 12 AWG |
| Fusing | External 60A |
Features & Benefits
| Compatible Vehicle Fitment | Universal |
|---|---|
| Low Noise Preamplifier Circuit | Maximum low voltage signal from the source unit comes into the amplifier circuit with minimal distortion. |
| RCA Inputs | Nickel plated high temperature impact resistant that allow for secure connections and is erosion resistant. |
| Operation Mode | Four Channel, Full Range, Bridgeable: Flexible installation allows this amplifier to run in four channel or bridged mono mode. |
| Crossover Type | Onboard electronic crossover |
| Electronic Equalizer | Control of amplifier output with on-board electronic crossover to tailor specific frequencies to speakers and subwoofers. |
| Class / Topology | Class D: High efficiency with big power in a small footprint. |
| Output Device Technology | PWM MOSFET Power Supply: Stable power through the PC board with minimal heat generation. |
| Heat Sink | Aluminum: Modern Design Hifonics Heat sink for Superior Heat Dissipation. |
| Power Supply | Simpatico Coil Design: The dual coil Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devices. |
| Connection Type | Secure molded connection terminal for all Power, Ground and Speaker connections. Angled for ease of access while creating a clean wire mangement profile. |
| LED System Protection Circuitry Diagnostics | Monitor overload and speaker short protection with illuminated indicators on the amplifier end panel. |
| Auto Turn-On | DC SIGNAL SENSE: The DC SIGNAL SENSE switch will allow the amp to turn on when a signal is received on the RCA inputs, so an amplifier remote turn on wire is not needed to turn on the amplifier. This feature can also be turned off. |




















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