Gravity
Gravity 4000.1D Car Amplifier 4000W with Bass Machine
★★★★★
11.3 in8.3 in2.5 in4000W
Unleash Powerful Bass with Precision ControlThe Gravity 4000.1D Class D Car Amplifier, paired with the SoundXtreme AP5 Bass Machine Bundle, delivers exceptional bass and voice clarity. Known for its power and reliability, this amplifier enhances your car audio with efficient performance.Specifica...
$179.99*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.
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Overview
Unleash Powerful Bass with Precision Control
The Gravity 4000.1D Class D Car Amplifier, paired with the SoundXtreme AP5 Bass Machine Bundle, delivers exceptional bass and voice clarity. Known for its power and reliability, this amplifier enhances your car audio with efficient performance.
Specifications:
- Amplifier Class: Class D
- Max Power: 4000W @ 1 Ohm
- Stable: 2 Ohm and 4 Ohm
- S/N Ratio: > 70 dB
- Frequency Response: 8 Hz ~ 180 Hz
- THD: <0.2%
- Bass Boost Level: 0 ~ 12 dB
- LPF: 40 Hz ~ 180 Hz
- Subsonic Filter: 0 ~ 50 Hz
- Inputs: High- and Low-Level Inputs
- Crossover: Variable Low Pass
- Bass Boost: Variable
- Dimensions: 286 mm (L) × 211 mm (W) × 64.5 mm (H)
- Included: SoundXtreme AP5 Bass Machine Bundle
Key Features
4000W Max Class D @ 1 Ohm, Stable at 2 Ohm and 4 Ohm with Bass Knob Included (2nd Generation)
S/N Ratio > 70 dB with Frequency Response at 8 Hz ~ 180 Hz and THD < 0.2%
Bass Boost Level 0 ~ 12 dB with LPF 40 Hz ~ 180 Hz and Subsonic Filter 0 ~ 50 Hz
High and Low Level Inputs, Variable Low Pass Crossover, Variable Bass Boost
Dimension ( L×W×H ): 286 mm (11.3 in) × 211 mm (8.3 in) × 64.5 mm (2.5 in)
Specifications
Max Power Output
4000W
Class
Class D
Impedance Stability
1 Ohm, 2 Ohm, 4 Ohm
Included Accessory
Bass Knob (2nd Generation)
Signal-to-Noise Ratio (S/N)
> 70 dB
Frequency Response
8 Hz ~ 180 Hz
Total Harmonic Distortion (THD)
< 0.2%
Bass Boost Level
0 ~ 12 dB
Low Pass Filter (LPF)
40 Hz ~ 180 Hz
Subsonic Filter
0 ~ 50 Hz
Inputs
High and Low Level
Crossover
Variable Low Pass
Dimensions (L×W×H)
286 mm (11.3 in) × 211 mm (8.3 in) × 64.5 mm (2.5 in)
Pros & Cons
👍 Pros
- Delivers an impressive 4000W Max Class D power at 1 Ohm, ensuring robust audio output
- Maintains stability across 2 Ohm and 4 Ohm loads for versatile speaker configurations
- Comes with an included bass knob, providing convenient control over low-frequency output
- Achieves a strong S/N Ratio greater than 70 dB for clear sound reproduction
- Features a wide frequency response range of 8 Hz to 180 Hz, capturing deep bass notes
👎 Cons
- Maximum power output (4000W) is specified at 1 Ohm, which not all car audio setups can support
- Total Harmonic Distortion (THD) is specified as less than 0.2%, which might be higher than some audiophiles prefer
- The frequency response range is relatively narrow (8 Hz ~ 180 Hz), indicating it's optimized for subwoofers
- Installation complexity is not detailed, which could be a concern for DIY enthusiasts
- Does not specify power input requirements (e.g., gauge of wiring), which are crucial for setup
Frequently Asked Questions
What is the maximum power output of the Gravity 4000.1D car amplifier?
This Gravity car amplifier has a maximum power output of 4000W, achieved when operating at 1 Ohm.
Does this amplifier come with a bass control knob?
Yes, the Gravity 4000.1D amplifier includes a bass knob, specifically a 2nd Generation version, for convenient bass level adjustments.
What is the frequency response range of this amplifier?
The amplifier features a frequency response range of 8 Hz to 180 Hz, indicating its focus on delivering deep bass frequencies.
Can this amplifier be used with different speaker impedances?
Yes, the amplifier is stable at 1 Ohm, 2 Ohm, and 4 Ohm loads, offering flexibility in connecting various speaker configurations.
What kind of inputs does the Gravity 4000.1D support?
This amplifier is equipped with both high and low level inputs, allowing for connection to a wide range of car stereo head units.
What are the dimensions of this car amplifier?
The dimensions of the amplifier are 286 mm (11.3 in) in length, 211 mm (8.3 in) in width, and 64.5 mm (2.5 in) in height.
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