🎛️ Stetsom HL400.4 DSPlayer – 4-Channel DSP Amplifier | Bluetooth + USB + Optical | 400W RMS
🔧 Key Features & Inputs:
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🔊 4-Channel Full-Range Amplifier + DSP
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🎚️ Built-In Digital Signal Processor
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📲 Bluetooth Streaming
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💽 USB MP3 Playback
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🎧 Optical Audio Input (High Fidelity)
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🔌 RCA & High-Level Inputs
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📡 FM Radio with Favorites
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🎛️ DSP Control App:
• EQ
• Delay
• Level
• Phase
• Crossovers
• Channel Config for Car / Loudspeaker
Power Ratings (RMS):
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⚡ 400W Total RMS
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4 × 100W @ 2 Ohms (13.8V)
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4 × 70W @ 4 Ohms (13.8V)
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2 × 200W Bridged @ 4 Ohms
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Operating Voltage: 9V – 15V DC
Technical Specs
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Frequency Response: 20Hz – 20kHz
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Input Sensitivity:
• RCA: 250mV
• High Level: 1V
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Input Impedance:
• RCA: 5K Ohms
• High Level: 1K Ohms
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Output Impedance:
• Stereo: 2 Ohms
• Bridge: 4 Ohms
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Current Draw (Music): 16.5A
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Current Draw (Bass): 33A
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Size: 50 × 125 × 139 mm
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Weight: 0.5 kg
Product Description
🎶 Amplifier + DSP + Player — all in one powerful unit.
The Stetsom HL400.4 DSPlayer is a multifunction digital amplifier designed to deliver power, precision, and total control over your audio experience.
Unlike standard amps, the DSPlayer integrates:
✔️ An advanced DSP processor
✔️ Multiple audio input types
✔️ Multimedia playback
✔️ Wireless streaming
✔️ Built-in FM radio
Whether you're upgrading a factory system, installing a clean SQ setup, or driving loudspeakers for voceteo, this amp gives you unmatched flexibility.
🧠 The Stetsom app unlocks pro-level DSP settings:
Perfect for:
🔊 Smart systems
🔊 High-quality Bluetooth builds
🔊 DSP-controlled voice & midrange setups
🔊 Compact installations with max control
Why Choose the HL400.4 DSPlayer?
✔️ Amp + DSP + Player = fewer devices
✔️ Fully tunable sound via app
✔️ Optical input for clean HQ audio
✔️ USB & Bluetooth built-in
✔️ Perfect for modern DSP-based systems
