Hifonics A800.4D ALPHA 800 Watt 4-Channel Amplifier
Description
Description
The Hifonics A800.4D ALPHA series amplifier delivers 800 watts of high-efficiency output across four channels in a compact format. Engineered with Full Range Super D-Class® circuitry and Ultra-Fi MOSFETs, it produces high sound quality with low distortion and minimal thermal buildup.
Equipped with low-noise preamplifier circuits and nickel-plated RCA connections, this amplifier ensures high signal throughput and external noise rejection. Built-in Accu-Cross electronic crossovers provide precise signal tailoring for multi-channel or bridged mono setups.
Featuring Surface Mount Technology (SMT) and a heavy-duty aluminum alloy heatsink, the chassis withstands vehicle vibration while maintaining optimal operating temperatures. An intelligent auto turn-on circuit with DC offset sensing enables seamless integration with high-power factory and aftermarket source units.
Key Features
| Brand | Hifonics |
| Series | ALPHA |
| Amplifier Class | Full Range Super D-Class® |
| Total Channels | 4 |
| Max Power | 800 W |
| Power Output @ 2 Ohms | 4 x 200 W |
| Power Output @ 4 Ohms | 4 x 100 W |
| Mono Bridged Power @ 4 Ohms | 2 x 400 W |
| Frequency Response | 10Hz - 45kHz |
| Signal to Noise Ratio | > 85 dB |
| Total Harmonic Distortion (THD) | < 0.05% |
| Variable Voltage | 0.2 - 10 V |
| Bass Boost | 0-12 dB @ 45Hz |
| Variable High Pass Crossover | 20Hz - 4kHz (DUPE Mode: 10Hz - 500Hz) |
| Variable Low Pass Crossover | DUPE Mode: 50Hz - 4kHz |
| Power/Ground Terminal Gauge | 4 AWG |
| Speaker Terminal Gauge | 18 AWG |
| Dimensions | 34.3 × 17.8 × 8.6 cm |
| Weight | 2.3 kg |
| Color | Black |
Highlights
| Feature | Description |
|---|---|
| Low Noise Preamplifier Circuit | Maximum low voltage signal from the source unit enters the amplifier through a low voltage circuit which delivers minimal distortion through the amplification process. |
| RCA Inputs | Nickel plated RCA connectors for audiophile signal quality and maximum signal throughput with minimum distortion and maximum external noise rejection. |
| Operation Mode | Flexible installation allows this amplifier to run in four channel or bridged mono mode. |
| Crossover Type | Accu-Cross crossovers allow for complete control of the signal directing to all speakers. Refer to specifications for specific frequencies. |
| Electronic Equalizer | Control of amplifier output with on board electronic crossover to tailor specific frequencies to speakers and subwoofers. Refer to specifications for specific frequencies. |
| Class / Topology | Hifonics ALPHA Full Range Super D-Class® circuitry results in lower distortion, higher current efficiencies and produces less heat than conventional amplifier designs. |
| Output Device Technology | The Ultra-Fi™ MOSFET is designed for music production. It produces high power with high efficiency for cooling and minimal distortion. |
| Heat Sink | Heavy duty aluminum alloy heat-sink efficiently moves heat from the MOSFET for cooling. |
| Power Supply | The Twin Turbo Coil PS is a Pulse Width Modulated power supply that keeps voltage constant through the Ultra-Fi output devices. |
| Output Connections | Nickel-plated, high temperature impact resistant with hex screw terminals that allow for secure connections and are erosion resistant. |
| Connection Type | Secure connection for all power, ground and speaker connections. Angled for ease of access during installation. |
| LED System Protection Circuitry Diagnostics | Monitor overload and speaker short protection with illuminated indicators on the amplifier end panel. |
| Auto Turn-On | The amplifier detects a voltage rise (6 volts) with a "DC Offset" over the connected input signal on the HIGH LEVEL INPUTS when the source unit is switched on. The amplifier turns on and off automatically with the source unit. This feature eliminates the need to use the REM (turn on wire). The AUTO TURN-ON function is compatible with most source units equipped with high power output. |
| Full Range Digital | Mono amplifiers focus on subwoofer frequencies with Super D Class®, high efficiency/high power technology to deliver maximum wattage. ALPHA delivers sound in a compact chassis. |
| SMT Inside | Surface Mount Technology improves component placement and tolerances. SMT components allow for better circuit design for power and sound quality. Due to lower mass, SMT components withstand shock and vibration, making them suitable for automotive audio. |
| Additional Features | 300KHZ HIGH SPEED PULSING: The switching speed of the Class D chip puts the amplifier sampling frequencies at over 100 times higher than human hearing range, ensuring the digital switching remains inaudible in the audio bandwidth. |
Compatibility
Universally compatible with 12V automotive electrical systems and source units featuring standard RCA line-level outputs or high-level speaker inputs.
Warranty
1 Year Manufacturer's Warranty
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Frequently asked questions
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