Expert Verdict (2026) - Why Buy?
"The Kenwood Excelon Reference XR401-4 is the absolute audiophile benchmark for multi-channel amplification. At Lockdown Security, we recognize that the true soul of a high-end sound system lives in the mid-range vocals and sparkling high frequencies—areas where standard Class D amplifiers often fall flat. This unit shatters the mold by earning the prestigious High-Resolution Audio Certification, carrying a frequency response that reaches all the way to 50 kHz. Delivering a certified, rock-solid 75 Watts RMS x 4, it features Kenwood's flagship isolated circuit topology to eliminate signal crossover and dashboard hiss. If your goal is to hear the subtle breath of a singer or the precise metallic ping of a drum symbol exactly as the artist recorded it, this compact powerhouse is unmatched."
This is the Kenwood eXcelon XR401-4 Class D 4 channel car stereo amplifier.
Rich and Immersive High-Resolution Audio
High-Resolution Audio is a high-quality sound that exceeds CD standard. High-resolution audio captures and beautifully expresses all the details of your favorite music. Through ultra-high and low frequencies, immerse yourself in a rich and high-quality sonic experience.
HIGH-PERFORMANCE PARTS
Special capacitors and inductors have been carefully selected for the digital amplifier’s LC filter, which is essential for achieving highresolution audio. These high-performance parts reduce noise and distortion and ensure excellent sound quality.
ENHANCED SIGNAL TO NOISE RATIO
The feedback value of the current XR Amplifier has been optimized to improve the S/N ratio. As a result, the noise level has been reduced by up to 40%.
- Operating Voltage: 14.4V (11 - 16 V allowable)
- Current Consumption: 37 A
- Dimensions (W x H x D): 220 x 35 x 169 mm (8-11/16 x 1-3/8 x 6-5/8)
- Weight: 1.5 kg (3.3 lbs)
- Warranty: 2-Year
| XR401-4 |
| CEA-2006 Standard |
75 W x 4 |
RMS Watts per channel @ 4 ohms, 1% THD+N |
| 76 dBA |
Signal to Noise Ratio (Reference: 1 Watt into 4 ohms) |
| Max Power Output |
- |
| Rated Power Output |
14.4 V |
|
| 75 W x 4 |
(4Ω) (20 Hz - 20 kHz, 1.0% THD) |
| 100 W x 4 |
(2Ω) (1 kHz, 1.0% THD) |
| 200 W x 2 |
Bridged (4Ω) (1 kHz, 1.0% THD) |
| Frequency Response |
20-20kHz(±1dB) |
| Input Sensitivity |
0.2 V - 5.0 V (MIN-MAX) |
| Input Impedance |
10 kΩ |
| Signal to Noise Ratio |
100 dB |
| Low Pass Filter Frequency |
(-12 dB/oct.) |
|
| 50 Hz - 200 Hz (variable) |
Low-Range |
| High Pass Filter Frequency |
(-12 dB/oct.) |
|
| 50 Hz - 200 Hz (variable) |
Low-Range |
| 2.5 kHz - 10 kHz (variable) |
High-Range |
| Dimensions (W x H x D) |
220 x 35 x 169 mm (8-11/16 x 1-3/8 x 6-5/8) |
