Hifonics BG-700.1 BRUTUS BG 700 Watt Mono Block Amplifier
Key features
- Amplifier channels: 1
- Amplifier class: Class D
- Frequency response: 10Hz-180Hz
- Low-pass crossover (12 dB/octave): 40Hz-150Hz
- Subsonic filter: Switched On/Off
- Power/ground terminal wire size: 4 AWG
Hifonics BG-700.1 BRUTUS BG 700 Watt Mono Block Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Get up to 700 watts of mono subwoofer power from the Hifonics BG-700.1 BRUTUS BG amplifier. Its Class D design pairs flexible sound controls with a blue LED badge that can display audio levels to help you adjust gain.
Use the included bass remote to adjust the gain from the driver position. The silver amplifier is designed for 12V mobile audio systems and aftermarket source units.
Key Features & Benefits
- Three impedance ratings: Choose from 700 watts at 1 ohm, 500 watts at 2 ohms, or 350 watts at 4 ohms.
- Adjustable sound controls: Set the low-pass crossover, switch the subsonic filter on or off, and adjust bass boost from 0 to 12 dB.
- VU meter badge: Switch the blue LED logo to VU Meter mode to see audio-level response while setting gain.
- Included bass remote: Adjust gain from the driver position relative to the amplifier’s end-panel setting.
- Thermal design: The extruded aluminum mass-loaded heat sink supports heat dissipation during operation.
- Protection circuits: Over/under-voltage, short-circuit, and thermal protection help protect the amplifier and audio system.
Technical Specifications
| Brand | Hifonics |
|---|---|
| Series | BRUTUS BG |
| Model | BG-700.1 |
| Type | Amplifier |
| Condition | New |
| Color | Silver |
| Amp class | Super D Class™ |
| Total channels | 1 |
| Operation mode | Mono only |
| Maximum power | 700 watts |
| Power at 1 ohm | 1 x 700 watts |
| Power at 2 ohms | 1 x 500 watts |
| Power at 4 ohms | 1 x 350 watts |
| Frequency response | 10Hz-180Hz |
| Signal-to-noise ratio | 78dB |
| Total harmonic distortion (THD) | < 0.1% |
| Variable low-pass crossover | 12dB per Octave; 40Hz-150Hz |
| Bass boost | 0-12dB |
| Subsonic filter | Switched On/Off |
| Variable voltage | 0.2-6.5V |
| Power terminal | 12v/GND 4 AWG |
| Speaker terminal wire gauge | 12 AWG |
| Fusing | 2 x 40A |
| Item dimensions | 24.9 × 13 × 4.8 cm |
| Item weight | 1.9 kg |
| Package dimensions | 32.3 × 20.8 × 9.3 cm |
| Package weight | 2.3 kg |
| Compatible vehicle fitment | Universal |
| Compatibility | Designed for 12V mobile audio systems and aftermarket source units |
| Inductors | Shielded inductors for increased sound quality and ultra-low EMI |
| Heat sink | Mass-loaded extruded aluminum |
| Preamplifier circuit | High-end circuit accepts a wider range of input signals |
| RCA inputs | Nickel-plated RCA jacks; corrosion-resistant |
| Output devices | MOSFETS designed for high output power and fast thermal dissipation through an SMT process that produces ultra-low EMI |
| Board construction | 4-layer PCB design using a thinner substrate to improve heat dissipation and performance stability |
| Power supply | Dual toroidal transformers paired with a high-frequency PWM drive; protected by a current overload limiter |
| Turn-on function | Delayed turn-on function designed to eliminate unwanted turn-on/off noises like hisses and pops and ensure compatibility with a wide range of source units |
| Connection type | Secure molded connection terminal for power, ground, and speaker connections; angled for ease of access and wire management |
| Stylized badging | Switch between full constant blue LED lights, VU Meter mode, or full off. In VU Meter mode, the amplifier logo reflects audio level to assist with gain adjustment. |
| Protection circuits | Over/under voltage, short circuit, and thermal protection |
| Included | Hifonics BRUTUS BG-700.1 Mono Block Amplifier; Bass Remote Controller |
| Download | Hifonics BRUTUS (BG) Amplifiers Quick Start Guide (Rev1) |
Why Choose This Product?
The BG-700.1 gives you three rated power options across 1-, 2-, and 4-ohm loads, along with onboard controls for shaping the amplifier’s output. Its four-layer PCB, shielded inductors, and mass-loaded heat sink are design features intended to support stable operation and heat dissipation.
Use the selectable badge lighting for a steady blue display, VU meter response, or no illumination. The VU meter mode can help you observe audio levels during gain adjustment.
Installation & Compatibility Notes
This mono amplifier is designed for 12V mobile audio systems and aftermarket source units. Check your system’s speaker load, available mounting space, and connection requirements before installation.
The power and ground terminals accept 4 AWG wire, and the speaker terminals accept 12 AWG wire. The amplifier uses two 40A fuses. Follow the included quick-start guide for setup information.
Frequently Asked Questions
How much power does the BG-700.1 deliver at each impedance?
Its ratings are 700 watts at 1 ohm, 500 watts at 2 ohms, and 350 watts at 4 ohms.
Can I adjust the bass level from the driver position?
Yes. A bass remote is included and adjusts gain relative to the setting on the amplifier’s end panel.
What sound controls are built in?
It has a variable low-pass crossover from 40Hz-150Hz at 12dB per Octave, a switchable subsonic filter, and 0-12dB bass boost.
What wire sizes do the terminals accept?
The power and ground terminals accept 4 AWG wire. The speaker terminals accept 12 AWG wire.
What comes in the package?
The package includes the BG-700.1 mono block amplifier and a bass remote controller.
Explore More
Explore the Hifonics lineup and find audio equipment for your system. Want to learn more about Hifonics? Explore our Hifonics brand profile.
| Brand | Hifonics |
| Series | BRUTUS BG |
| Type | Amplifier |
| Condition | New |
| Color | Silver |
| Amp Class | Super D Class™ |
| Amp Total Channels | 1 |
| Amp Max Power (watts) | 700 |
| Amp Power @ 1 Ohm (ch x watts) | 1 x 700 |
| Amp Power @ 2 Ohms (ch x watts) | 1 x 500 |
| Amp Power @ 4 Ohms (ch x watts) | 1 x 350 |
| Amp Frequency Response | 10Hz-180Hz |
| Amp Signal to Noise | 78dB |
| Amp Total Harmonic Distortion (THD) | < 0.1% |
| Amp Variable Low Pass Crossover 12dB per Octave | 40Hz-150Hz |
| Amp Bass Boost | 0-12dB |
| Amp Subsonic Filter | Switched On/Off |
| Amp Variable Voltage | 0.2-6.5V |
| Amp Power Terminal 12v/GND | 4 AWG |
| Amp Speaker Terminal Wire Gauge | 12 AWG |
| Amp Fusing | 2 x 40A |
| Item Dimensions | 24.9 × 13 × 4.8 cm |
| Item Weight | 1.9 kg |
| Package Dimensions | 32.3 × 20.8 × 9.3 cm |
| Package Weight | 2.3 kg |
| Compatible Vehicles | Universal |
| Feature | Description |
|---|---|
| Compatible Vehicle Fitment | Universal |
| Ultra-Low EMI Design | Shielded inductors are used in the BG series for increased sound quality that produces ultra-low EMI. |
| Mass-Loaded Heat Sink | The mass-loaded extruded aluminum heat sink results in better thermal management and output performance. |
| High-End Preamplifier Circuit | Accepts a wider range of input signals. |
| RCA Inputs | Nickel-plated RCA jacks create an efficient connection that are corrosion-resistant. |
| High Tolerance Output Device | BRUTUS BG amplifiers have MOSFETS designed for high output power and fast thermal dissipation through a SMT process that produces ultra-low EMI. |
| Operation Mode | Mono only |
| Clean Board Construction | 4-layer PCB design, using a thinner substrate, improves heat dissipation and enhances performance stability. |
| Class / Topology | BG amplifiers feature a Class-D chipset, making them more efficient and allowing for a wide frequency range. |
| Power Supply | Dual toroidal transformers paired with a high-frequency PWM drive results in higher power capacity compared to other transformer designs. This system is protected by a current overload limiter. |
| Delayed Turn-On Function | Ensures compatibility with a wide range of source units to eliminate unwanted turn-on/off noises like hisses and pops. |
| Connection Type | Secure molded connection terminal for all Power, Ground and Speaker connections. Angled for ease of access while creating a clean wire management profile. |
| Stylized Badging | Switch between full constant blue LED lights, VU Meter mode, or full off. When switched to VU Meter mode, the amplifier’s logo reflects the audio level, useful for gain adjustment. |
| Triple Protection Circuits | Over/under voltage, short circuit, and thermal protection circuits protect the audio system and vehicle under nearly every circumstance. |
| Bass Remote Included | The mono amplifier includes a bass remote that allows adjustment of the gain level relative to the setting on the amplifier’s end panel. |
Frequently asked questions
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