Hifonics BG-1100.4 BRUTUS BG 1100 Watt Four Channel Amplifier
Key features
- Amplifier channels: 4
- Amplifier class: Class D
- Frequency response: 10Hz-30kHz
- High-pass crossover (12 dB/octave): 50Hz-5kHz
- Low-pass crossover (12 dB/octave): 50Hz-5kHz
- Speaker-level inputs: Yes
Hifonics BG-1100.4 BRUTUS BG 1100 Watt Four Channel Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Add four-channel amplification to your mobile audio system with the Hifonics BG-1100.4 BRUTUS BG amplifier. It delivers up to 1100W of total output and supports stereo or mono-bridged operation, with high-level inputs for connecting to compatible factory audio systems.
Variable crossovers, adjustable bass boost, and selectable signal-sensing turn-on give you options for configuring the amplifier to your system. Its illuminated badge can display a VU meter to show audio output levels during gain adjustment.
Key Features & Benefits
- Four-channel operation: Use stereo or mono-bridged operation to suit your system configuration.
- Factory-audio integration: High-level inputs accept speaker signals when your source unit lacks RCA outputs.
- Adjustable tuning: Variable crossovers and 0–12dB bass boost let you tailor the signal.
- Signal-sensing turn-on: DC signal sense can switch on the amplifier when it detects a signal at the high-level inputs.
- Illuminated VU meter: Choose a blue badge, VU meter mode, or lights off; the meter displays audio output levels.
- Triple-stage protection: Protection circuits address over/under voltage, short circuits, and thermal conditions.
Technical Specifications
| Brand | Hifonics |
|---|---|
| Series | BRUTUS BG |
| Type | Amplifier |
| Amplifier Class | Super D Class™ |
| Channels | 4 |
| Max Power | 1100W |
| Power Output @ 2 Ohms | 4 x 275W |
| Power Output @ 4 Ohms | 4 x 175W |
| Mono Bridged Power @ 4 Ohms | 2 x 550W |
| Frequency Response | 10Hz-30kHz |
| Signal to Noise Ratio | 83dB |
| Total Harmonic Distortion (THD) | < 0.1% |
| Crossover | Variable Electronic 12dB Per Octave, APF, HPF, LPF |
| Variable High Pass Crossover | 50Hz-5KHz |
| Variable Low Pass Crossover | 50Hz-5KHz |
| Bass Boost | 0-12dB Variable |
| Voltage | 0.2-7V |
| Speaker Level Audio Inputs | Yes |
| Power Terminal Wire Gauge | 4 AWG |
| Speaker Terminal Wire Gauge | 12 AWG |
| Fusing | 3 x 40A |
| Color | Silver |
| Product Dimensions | 31.0 × 13.0 × 4.8 cm |
| Product Weight | 2.6 kg |
| Packaged Dimensions | 38.7 × 20.8 × 9.3 cm |
| Packaged Weight | 2.9 kg |
| 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 supports thermal management and output performance. |
| High-End Preamplifier Circuit | Accepts a wider range of input signals. |
| RCA Inputs | Nickel-plated RCA jacks provide corrosion-resistant connections. |
| 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. |
| High Level Inputs | Connect to OEM audio systems that do not offer RCA output. |
| Operation Mode | 4 channel operation mode allows either stereo or mono bridged operation. |
| 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 result in higher power capacity compared to other transformer designs. The system is protected by a current overload limiter. |
| Delayed Turn-On Function | Designed to support compatibility with a wide range of source units and eliminate unwanted turn-on/off noises like hisses and pops. |
| Connection Type | Secure molded connection terminal for 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. In VU Meter mode, the amplifier’s logo reflects audio level to aid gain adjustment. |
| Triple Protection Circuits | Over/under voltage, short circuit, and thermal protection circuits protect the audio system and vehicle. |
| Auto Turn-On | The DC SIGNAL SENSE switch allows the amplifier to turn on when a signal is received on the high-level inputs. An amplifier remote turn-on wire is not needed for this function. This feature can also be turned off. |
| Compatibility | Universal mobile vehicle compatibility, supporting connection via standard RCA pre-amp inputs or direct OEM high-level speaker wire connections. |
Why Choose This Product?
The BG-1100.4 combines four-channel output with input options for RCA pre-amp signals or OEM speaker-level connections. Its Super D Class circuit topology, dual toroidal transformer PWM power supply, and 4-layer PCB are specified for this amplifier. Nickel-plated RCA jacks, shielded inductors, and a mass-loaded extruded aluminum heat sink add practical connection and thermal-design details.
The selectable badge lighting gives you a choice of constant blue illumination, a VU meter display, or no lighting. Use the meter display as a visual aid when adjusting gain.
Installation & Compatibility Notes
The listed fitment is universal for mobile vehicles. The amplifier supports standard RCA pre-amp inputs or direct connections to OEM high-level speaker wires. Check your source unit, system configuration, and installation space before choosing an installation approach.
Power connections use 4 AWG wire, speaker terminals use 12 AWG wire, and the listed fusing is 3 x 40A. Molded Power, Ground, and Speaker terminals are angled for access. DC signal sensing can enable turn-on from a high-level input without a remote turn-on wire; the feature can also be switched off.
Frequently Asked Questions
What are the BG-1100.4’s power ratings?
It is rated at 4 x 175W at 4 ohms, 4 x 275W at 2 ohms, and 2 x 550W mono-bridged at 4 ohms. Maximum total power is listed as 1100W.
Can I connect it to a factory audio system?
Yes. Its high-level inputs accept OEM speaker-wire connections, and DC signal sensing can turn on the amplifier when it detects a signal at those inputs.
What crossover and bass adjustments does it offer?
It has variable electronic 12dB-per-octave APF, HPF, and LPF crossovers. The high-pass and low-pass ranges are each 50Hz-5KHz, and bass boost is variable from 0-12dB.
What are its dimensions and weight?
The amplifier measures 31.0 × 13.0 × 4.8 cm and weighs 2.6 kg. Packaged dimensions are 38.7 × 20.8 × 9.3 cm, and packaged weight is 2.9 kg.
What protections are built in?
Protection circuits cover over/under voltage, short circuits, and thermal conditions. The power supply also includes a current overload limiter.
Can I turn off the illuminated badge?
Yes. Select constant blue LED lighting, VU Meter mode, or full off.
Explore More
Shop the Hifonics BG-1100.4 at 12 Volt Outlet. Want to learn more about Hifonics? Explore our Hifonics brand profile.
Hifonics BRUTUS (BG) Amplifiers Quick Start Guide (Rev1)
| Brand | Hifonics |
| Series | BRUTUS BG |
| Type | Amplifier |
| Amplifier Class | Super D Class™ |
| Channels | 4 |
| Max Power | 1100W |
| Power Output @ 2 Ohms | 4 x 275W |
| Power Output @ 4 Ohms | 4 x 175W |
| Mono Bridged Power @ 4 Ohms | 2 x 550W |
| Frequency Response | 10Hz-30kHz |
| Signal to Noise Ratio | 83dB |
| Total Harmonic Distortion (THD) | < 0.1% |
| Crossover | Variable Electronic 12dB Per Octave, APF, HPF, LPF |
| Variable High Pass Crossover | 50Hz-5KHz |
| Variable Low Pass Crossover | 50Hz-5KHz |
| Bass Boost | 0-12dB |
| Variable Voltage | 0.2-7V |
| Speaker Level Audio Inputs | Yes |
| Power Terminal 12V/GND Wire Gauge | 4 AWG |
| Speaker Terminal Wire Gauge | 12 AWG |
| Fusing | 3 x 40A |
| Color | Silver |
| Product Dimensions | 31.0 × 13.0 × 4.8 cm |
| Product Weight | 2.6 kg |
| Packaged Dimensions | 38.7 × 20.8 × 9.3 cm |
| Packaged Weight | 2.9 kg |
| 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. |
| High Level Inputs | Easily tie into OEM audio systems that do not offer RCA output to maximize after-market amplifier power. |
| Operation Mode | 4 channel operation mode allows either stereo or mono bridged operation. |
| 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 whole system is protected by a current overload limiter. |
| Delayed Turn-On Function | Ensures compatibility with a wide range of source units to eliminate any 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 mangement 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, making it 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. |
| Auto Turn-On | The DC SIGNAL SENSE switch allows the amplifier to turn on when a signal is received on the high level inputs. An amplifier remote turn on wire is not needed to power on the amplifier. This feature can also be turned off. |
Frequently asked questions
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