Stetsom HL400.4 – 4 Channel Car Audio Amplifier

🔊 Stetsom HL400.4 – 4 Channel Car Audio Amplifier | 400W RMS | Compact & Powerful

🔧 Key Specifications:

• 🎚️ 4-Channel Class AB Amplifier

• 🔥 400W Total RMS Power

• 🎵 Power @ 2 Ohms (13.8V): 4 × 100W RMS

• 🎵 Power @ 4 Ohms (13.8V): 4 × 60W RMS

• 🚀 Bridged Power @ 4 Ohms: 2 × 200W RMS

• 🔋 Operating Voltage: 9V – 15V DC

• 🎼 Frequency Response: 5Hz – 24kHz

• 📈 Signal-to-Noise Ratio: > 90dB

• 🎛️ Input Sensitivity:
  • RCA: 200mV
  • Wire Input: 1.5V

• 🔌 Compact Size: 50 × 125 × 124 mm

• ⚖️ Weight: 520g

Product Description

💥 Small size, big power.
The Stetsom HL400.4 is a high-efficiency 4-channel amplifier designed to deliver clean and dynamic audio in any car audio setup — from everyday builds to high-performance systems.

Perfect for powering:

• Midrange speakers

• Coaxial systems

• Compression drivers

• Tweeters

• Small sub setups (bridged)

With 400W RMS total power, it can run 4 speakers at 2 Ohms or be configured in bridge mode for more powerful channels — ideal for front stage upgrades or rear fill.

🎯 Its compact footprint makes it easy to install in tight spaces, motorcycles, UTVs, or hidden OEM-style builds.

Engineered with high signal-to-noise ratio, wide frequency response, and low distortion for clean, loud, and reliable sound.

Why Choose the HL400.4?

✔️ Compact but powerful
✔️ High efficiency & clean audio
✔️ Perfect for mids, highs & voice setups
✔️ Stetsom reliability — made for competition & street sound