Hifonics A2500.5D ALPHA 2500 Watt 5-Channel Amplifier
Key features
- Amplifier channels: 5
- Amplifier class: Class D
- High-pass crossover (12 dB/octave): CH1 & CH2: 10Hz-250Hz, CH3 & CH4: 10Hz-250Hz
- Low-pass crossover (12 dB/octave): CH5: 50Hz-250Hz
- Speaker-level inputs: Yes
- Power/ground terminal wire size: 4 AWG
Hifonics A2500.5D ALPHA 2500 Watt 5-Channel Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Build a five-channel car audio system with the Hifonics A2500.5D ALPHA 2500-watt amplifier. Its hybrid Full Range Super D-Class® and Super D-Class® design combines four full-range channels with a dedicated fifth channel for subwoofer output.
Accu-Cross electronic crossovers, low-noise preamplifier circuitry, and nickel-plated RCA connections support signal control across the channels. An included HFR-31 wired remote lets you adjust Channel 5 bass level from the driver’s seat.
Key Features & Benefits
- Five-channel design: Four channels handle full-range audio, with Channel 5 dedicated to subwoofer output.
- Selectable power ratings: Published output ratings at 1, 2, and 4 ohms help you compare the amplifier with your planned speaker loads.
- Accu-Cross controls: Variable high-pass and low-pass crossovers let you adjust frequency ranges for the respective channels.
- Channel 5 bass adjustment: The included HFR-31 wired remote provides convenient subwoofer level control.
- Heat and power design: A heavy-duty aluminum alloy heat sink and Twin Turbo Coil Pulse Width Modulated power supply support stable operating temperatures and voltage.
- Vehicle-ready construction: Surface Mount Technology is designed for vibration resistance, while angled terminals can simplify installation access.
Technical Specifications
| Brand | Hifonics |
|---|---|
| Model Number | A2500.5D |
| Series | ALPHA |
| Type | Amplifier |
| Condition | New |
| Color | Black |
| Amp Class | Full Range Super D-Class®, Super D-Class® |
| Total Channels | 5 |
| Max Power | 2500 W |
| Power @ 1 Ohm | 1 x 750 W (CH5 only) |
| Power @ 2 Ohms | 4 x 100 W + 1 x 450 W |
| Power @ 4 Ohms | 4 x 60 W + 1 x 250 W |
| Frequency Response | CH1-4: 10Hz-250Hz, CH5: 50Hz-250kHz |
| Signal to Noise Ratio | > 85dB |
| Total Harmonic Distortion (THD) | < 0.05% |
| Variable Voltage | 0.2-10V |
| Bass Boost | 0-12dB @ 45Hz |
| Variable High Pass Crossover (12dB/Octave) | CH1 & CH2: 10Hz-250Hz, CH3 & CH4: 10Hz-250Hz |
| Variable Low Pass Crossover (12dB/Octave) | CH5: 50Hz-250Hz |
| Power Terminal Gauge | 4 AWG |
| Speaker Terminal Gauge | CH1-4: 18 AWG, CH5: 16 AWG |
| Speaker Level Audio Inputs | Yes |
| Dimensions | 45.1 × 17.8 × 8.9 cm |
| Heatsink Dimensions | 33.0 × 23.5 × 6.0 cm |
| Weight | 3.7 kg |
| Compatible Vehicles | Universal |
| Compatibility | Universally compatible with 12V vehicle electrical systems and aftermarket or factory source units featuring low-level RCA or speaker-level audio outputs. |
| Warranty | 1 Year |
| What's Included | Hifonics A2500.5D ALPHA 5-Channel Amplifier; HFR-31 Wired Bass Remote |
| Downloads | Hifonics ALPHA Amplifiers (A) Quick Start Guide (Rev3); Hifonics Autosense Technical Guide (Rev3) |
Why Choose This Product?
The A2500.5D brings four channels and a dedicated subwoofer channel into one amplifier, with separate crossover ranges for those channel groups. Its stated power ratings vary by load, so you can assess the published output against your system’s speaker and subwoofer impedance.
Nickel-plated RCA connections and integrated speaker-level inputs give you source connection options. The included remote adds a direct way to adjust Channel 5 bass level while seated in the vehicle.
Installation & Compatibility Notes
This amplifier is specified for 12V vehicle electrical systems and aftermarket or factory source units with low-level RCA or speaker-level audio outputs. Check your source-unit connection type, speaker loads, available mounting space, and terminal access before installation.
Its dimensions are 45.1 × 17.8 × 8.9 cm; the heat sink measures 33.0 × 23.5 × 6.0 cm. Power terminals support 4 AWG, while speaker terminals are specified for 18 AWG on CH1-4 and 16 AWG on CH5.
Frequently Asked Questions
What does the 2500-watt maximum power rating mean?
2500 W is the amplifier’s stated total maximum power. The separate output ratings are listed by impedance and channel configuration in the specifications above.
What are the output ratings at each impedance?
At 1 ohm, the rating is 1 x 750 W for CH5 only. At 2 ohms, it is 4 x 100 W + 1 x 450 W; at 4 ohms, it is 4 x 60 W + 1 x 250 W.
Can I connect a factory source unit?
Yes. The amplifier is specified for factory or aftermarket source units with low-level RCA or speaker-level audio outputs.
Is a bass remote included?
Yes. The HFR-31 wired bass remote is included for Channel 5 subwoofer level control.
What is included in the package?
The listed items are the Hifonics A2500.5D ALPHA 5-channel amplifier and HFR-31 wired bass remote.
Explore More
Shop the Hifonics A2500.5D at 12 Volt Outlet. Want to learn more about Hifonics? Explore our Hifonics brand profile.
| Brand | Hifonics |
| Model Number | A2500.5D |
| Series | ALPHA |
| Type | Amplifier |
| Condition | New |
| Color | Black |
| Amp Class | Full Range Super D-Class®, Super D-Class® |
| Total Channels | 5 |
| Max Power | 2500 W |
| Power @ 1 Ohm | 1 x 750 W (CH5 only) |
| Power @ 2 Ohms | 4 x 100 W + 1 x 450 W |
| Power @ 4 Ohms | 4 x 60 W + 1 x 250 W |
| Frequency Response | CH1-4: 10Hz-250Hz, CH5: 50Hz-250kHz |
| Signal to Noise Ratio | > 85dB |
| Total Harmonic Distortion (THD) | < 0.05% |
| Variable Voltage | 0.2-10V |
| Bass Boost | 0-12dB @ 45Hz |
| Variable High Pass Crossover (12dB/Octave) | CH1 & CH2: 10Hz-250Hz, CH3 & CH4: 10Hz-250Hz |
| Variable Low Pass Crossover (12dB/Octave) | CH5: 50Hz-250Hz |
| Power Terminal Gauge | 4 AWG |
| Speaker Terminal Gauge | CH1-4: 18 AWG, CH5: 16 AWG |
| Speaker Level Audio Inputs | Yes |
| Dimensions | 45.1 × 17.8 × 8.9 cm |
| Heatsink Dimensions | 33.0 × 23.5 × 6.0 cm |
| Weight | 3.7 kg |
| Compatible Vehicles | Universal |
| Warranty | 1 Year |
Frequently asked questions
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