Stetsom - HL 400.4 OH2 4-Channel Class D Car Amplifier, 400W RMS, 2 Ohm Stable, Full Range with Variable Crossover - Black
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Specifications
- RMS Power400 wattsPeak Power Handling400 wattsMinimum Frequency Response5 hertzMaximum Frequency Response2400 kilohertzSensitivity0 decibelsSpeaker Size10"
- Key Specs
- RMS Power: 400 watts (The maximum amount of continuous power the device is able to handle.)
- Peak Power Handling: 400 watts (The maximum amount of power an electronic device, like a speaker, can handle without damage. This refers to short bursts of power, while root mean square (RMS) power handling indicates the amount of continuous power a device can sustain. Higher levels of distortion can also occur at peak power levels when the device is powered beyond its recommended usage.)
- Minimum Frequency Response: 5 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Maximum Frequency Response: 2400 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Sensitivity: 0 decibels
- Speaker Size: 10"
- Speaker Type: 1-way
- General
- Brand: Stetsom
- Model Number: HL 400.4
- Product Name: Stetsom HL 400.4 OH2 4-Channel Class D Car Amplifier, 400W RMS, 2 Ohm Stable, Full Range with Variable Crossover
- Color: Black
- Number Of Speakers: 4
- Audio
- RMS Power: 400 watts (The maximum amount of continuous power the device is able to handle.)
- Peak Power Handling: 400 watts (The maximum amount of power an electronic device, like a speaker, can handle without damage. This refers to short bursts of power, while root mean square (RMS) power handling indicates the amount of continuous power a device can sustain. Higher levels of distortion can also occur at peak power levels when the device is powered beyond its recommended usage.)
- Minimum Frequency Response: 5 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Maximum Frequency Response: 2400 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Impedance: 2 ohms (Describes the resistance of an electric signal throughout the system. Devices with low impedance require less power to deliver optimal signals but are more at risk for damage from overloading. Higher impedance requires more power but is more protected from overload damage.)
- Sensitivity: 0 decibels
- Features
- Integrated Crossover: false
- Marine: false
- Grille Included: false
- Design
- Speaker Size: 10"
- Speaker Type: 1-way
- Dimensions
- Product Height: 1.97 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 4.92 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth: 4.88 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
- Product Weight: 1.15 pounds (The out of box weight of the item.)
- Warranty
- Warranty - Parts: 1 year
- Warranty - Labor: 1 year
- Other
- UPC: 7897748705686
The Stetsom HL 400.4 is a compact 4-channel Class D car amplifier delivering 400W RMS with 2-ohm stability. It outputs 4x105W RMS at 2 ohms (14.4V) or 4x70W at 4 ohms, and bridges to 2x200W at 4 ohms for subwoofer use. Its 5Hz to 24kHz frequency response covers the full audio spectrum from sub-bass to crisp highs. Independent front and rear channel level controls, along with crossover switching (Flat, Low-Pass, High-Pass), provide system flexibility. Channels 3 and 4 include a variable crossover (30–75Hz) with +14dB bass boost, ideal for subwoofers. Its dimensions are 1.97x4.92x4.88 inches and it weighs 1.15 lbs.
- Stetsom HL 400.4 OH2 4-Channel Class D Car Amplifier, 400W R: The Stetsom HL 400.4 is a compact 4-channel Class D car amplifier delivering 400W RMS with 2-ohm stability
- 400W RMS 4-Channel Compact Amp: 400W RMS total — 4x105W at 2 ohms (14.4V), bridges to 2x200W at 4 ohms for subwoofer use.
- 5Hz–24kHz Full-Range Response: 5Hz to 24kHz frequency response handles everything from deep bass to the highest highs.
- Variable Crossover + Bass Boost: Channels 3 & 4 include variable crossover (30–75Hz) and +14dB bass boost for perfect sub tuning.
- Ultra Compact Design: Tiny 1.97x4.92x4.88-inch footprint fits virtually anywhere, ideal for tight modern vehicle installs.
Whats Included
- 1
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The Stetsom HL 400.4 is a compact 4-channel Class D car amplifier delivering 400W RMS with 2-ohm stability. It outputs 4x105W RMS at 2 ohms (14.4V) or 4x70W at 4 ohms, and bridges to 2x200W at 4 ohms for subwoofer use. Its 5Hz to 24kHz frequency response covers the full audio spectrum from sub-bass to crisp highs. Independent front and rear channel level controls, along with crossover switching (Flat, Low-Pass, High-Pass), provide system flexibility. Channels 3 and 4 include a variable crossover (30–75Hz) with +14dB bass boost, ideal for subwoofers. Its dimensions are 1.97x4.92x4.88 inches and it weighs 1.15 lbs.
Transform your 2021–2024 Ford Bronco’s audio performance with the MB Quart Stage 6 Tuned Audio Package, an 800-watt, eight-speaker sound system engineered for Bronco models equipped with the OEM base audio system or an aftermarket source unit. Designed to deliver premium clarity, powerful volume, and immersive staging, this upgrade dramatically elevates your listening experience on or off the road.At the front of the system is a true 3-way 6.5" / 4" component speaker setup supported by 1" magnesium dome WideSphere™ tweeters for crisp, extended high frequencies. The midbass and midrange drivers use aerated pop paper cones blended with mica for strength, warmth, and accuracy. The speakers drop directly into the factory locations, with the tweeters mounting cleanly behind the dash speaker grilles.Rear fill is handled by a pair of 6.5" 2-way coaxial speakers, also equipped with 1" magnesium dome tweeters for balanced sound imaging throughout the cabin. These mount securely in the rear pillar enclosures, replacing the factory hardware while maintaining a factory-clean look.Powering the entire system are two compact yet high-output 400-watt Class-D amplifiers. With on-board equalization, high efficiency, and low current draw, they deliver clean, dynamic power without stressing the electrical system. Both amps mount to a durable powder-coated bracket for secure, long-term stability in rugged environments.Installation is designed for simplicity: the package includes all required wiring harnesses for plug-and-play integration and a PAC module to integrate seamlessly with the OEM base model audio. With only basic hand tools, you can achieve a complete, transformative sound upgrade without complicated modifications.For Bronco owners seeking a dramatic leap in sound quality, output, and clarity, the MB Quart Stage 6 system delivers premium performance custom-built for your adventures.
Enhance your in-vehicle sound with this pair of KICKER CS-Series three-way speakers. Polypropylene woofer cones with ribbed UV-treated surrounds and Extended Voice Coil technology provide deep, rich bass while ensuring efficient performance. The mid-range drivers and PEI balanced dome tweeters of these KICKER CS-Series three-way speakers produce clear, dynamic higher-frequency audio details. Geek Squad Installation Recommended Visit your local Best Buy store for more information.
Upgrade your vehicle's music system with these KICKER KS-Series triaxial speakers. The silk-dome tweeters, polypropylene cones and durable rubber surrounds produce dynamic, well-balanced sound, while the thin-mount design allows easy installation. These KICKER KS-Series triaxial speakers handle up to 150W of power to deliver powerful audio reproduction, and the included grilles help protect against damage. Geek Squad Installation Recommended Visit your local Best Buy store for more information.
| Pros for Stetsom - HL 400.4 OH2 4-Channel Class D Car Amplifier, 400W RMS, 2 Ohm Stable, Full Range with Variable Crossover - Black | |||
|---|---|---|---|
| There were no pros for this product— | There were no pros for this product— | Sound Quality, Bass, Ease of Installation, Price, Fit | Sound Quality, Bass |
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