Stetsom HL 400.4 Class D Full Range Amplifier 4 Channel 400 Watts, RCA Input and High Wire Input, Variable Crossover
Massive Power & Clarity
Superior Performance
Advanced Technology
Premium Quality
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Developed for those seeking high performance and sound fidelity in automotive amplifiers.
The HL400.4, is a 400W RMS product with 4 CHANNELS and great installation versatility.
It offers independent front and rear channels such as LEVEL to adjust the input signal level and Crossover, allowing you to choose between LOW-PASS, HIGH-PASS or FLAT (FULL-RANGE) operation.
Introducing the HL400.4, the latest audio amplifier in the HIGH LINE family!
The HL400.4 is designed to deliver exceptional performance with superior audio quality even with its compact size. With 4 channels of amplified outputs and frequency response from 5Hz to 24Khz, it offers flexibility for use in STEREO or BRIDGE.
Ideal for complete audio systems, such as coaxial speakers, triaxial speakers, subwoofers, woofers, drivers or tweeters, it offers the versatility to use a single amplifier.
HD Audio Processing: Enjoy precise, high-fidelity audio reproduction, with well-defined mids and clear highs.
CROSSOVER Controls: The amplifier features CROSSOVER switches, allowing precise frequency adjustments to meet specific system needs.
CH1 & CH2 CHANNELS (MODES):
FLAT: No frequency cuts L.P.F: 90Hz frequency (fixed)
H.P.F: 90Hz frequency (fixed)
CH3 & CH4 CHANNELS (MODES):
FLAT: No frequency cuts
L.P.F: Frequency from 30Hz to 75Hz (variable) + 14dB Bass Boost (Output with low frequency adjustment, ideal for use with SUBWOOFER)
H.P.F: 90Hz frequency (fixed)
BRIDGE mode for STRONG BASS: By joining two channels, the amplifier operates in BRIDGE mode, doubling the power available to power SUBWOOFERS or other demanding components.
Robust and insulated connectors: The connectors were designed to offer a safe and reliable connection, with an insulating ABS finish to protect the installation.
+ TECHNOLOGY + COMPACT + STETSOM
TECHNICAL SPECIFICATIONS
| CHARACTERISTICS | HL400.4 – 2 OHMS |
|---|---|
| Number of Channels | 4 |
| RMS Power | 400W |
| RMS Power at 2 Ohm 13.8V | 4 x 100W |
| RMS Power at 4 Ohm 13.8V | 4 x 60W |
| RMS Power at 2 Ohm 14.4V | 4 x 105W |
| RMS Power at 4 Ohm 14.4V | 4 x 70W |
| Power @ 13.8V Bridge 4 Ohms | 2 x 200W |
| Supply Voltage | 9V ~15V DC |
| Frequency Response | 5Hz ~ 24KHz |
| Signal to Noise | >90dB |
| Input Sensitivity | RCA: 200mV / FIO: 1.5V |
| Input Impedance | RCA: 5K Ohms / FIO: 1K Ohms |
| Impedance Output | STEREO: 2 OHMS / BRIDGE: 4 OHMS |
| Consumption with Signal Musical | 17A |
| Consumption with Signal Bass | 34A |
| Dimensions (H x W x D) mm | 50 x 125 x 124 mm |
| Weight Kg | 520g |
| UPC | 7897748705686 |
Free shipping in the 48 U.S. states. Orders placed before 11 PM ET process next business day; shipping takes 5–8 days. Tracking info is emailed once shipped. To cancel, contact info@eliteautogear.com within 24 hours. Processed orders can’t be canceled. Thank you for choosing Elite Auto Gear!
Customer Support : 9:00 am to 5:00 pm
Address: 13446 Alondra Boulevard, Cerritos ,California 90703, United States
Email: info@eliteautogear.com
Phone: (877)-215-8187
From Boats to Jeeps to UTVs
Built to Be Heard Everywhere You Ride
Power That Dominates
Pushes up to 900W peak / 300W RMS for crystal-clear highs and bass that cuts through wind, waves, or trails.
Built for Tough Rides
Engineered to withstand extreme conditions with rugged construction and weatherproof design.
Built for Power & Durability
Premium materials and advanced engineering ensure long-lasting performance in any environment.
Immersive Sound & Lighting
Experience rich, immersive audio with synchronized lighting effects that enhance every adventure.
Upgrade Your Ride With Pro-Level Sound
What Our Customers Are Saying
⭐ 4.9 stars reviews, Loved by Thousands
"Great packaging and super loud speakers would recommend buying and got delivered fast"
M**I
Verified Customer
"Installed Apocalypse 6.5 mids, DS18 tweeters, and Orion 6x9s in my 2014 Dodge Challenger RT — amazing sound! Quality and materials are top-notch. Definitely buying from them again."
B.
Verified Customer
"10 de 10 con el envío super rápido espero que si tengan buen sonido estan muy bonitas"
werita&chukito3
Verified Customer
"Definitely a must can't wait to install all my speakers I would buy from them again I got the apocalypse 6.5 mid range ds18 tweeters 3.5 full range and Orion 6x9 mid range"
Verified Customer
"Me gustó mucho buena calidad Y suena recio como yo pensaba si se las recomiendo buen sonido"
Verified Customer
"The speakers were loud and good"
B.
Verified Customer
"Great product but it only comes with one tweeter so make sure you buy 2"
obs_brycen
Verified Customer
"Súper buena calidad, buen sonido de voz, y llega en buenas condiciones"
s**a
Verified Customer
"Received them and they work as i expected"
bmtmanuel
Verified Customer
"They got here before estimated arrival and are in amazing condition"
**l
Verified Customer
"Muy buen producto de escucha muy bien"
M**S
Verified Customer