JVC KS-DR2104DBT Bluetooth 4-Channel Compact Digital Amplifier 50W RMS x 4 @ 4 ohms and KS-DR2001D Compact Mono Digital Amplifier 300W x 1 RMS @ 2 ohms / Wired Level Control Included for Car, Marine, UTV and Motorcycle

Included in this kit

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JVC KS-DR2104DBT 4-Channel Compact Digital Amplifier featuring Bluetooth for Compact Car, Marine, UTV and Motorcycle / Max Power 600W / 50W RMS x 4 @ 4 ohms -
• IP67/IP66 Waterproof & Dustproof
• ASTM B117 Rustproof
• Vibration-proof
• Increased Power Flow
• High Quality Capacitors
• Magnetic Shielding
• Easy-to-Use Waterproof Bluetooth Remote Control
• Qualcomm Bluetooth 5.0
• Versatile Installation

Specifications • Audio unit
• Max Power Output: 600W
• Rated Power Output:
• Stereo (4Ω) 50W x 4 (20Hz–20kHz, ≤1.0% THD)
• Stereo (2Ω) 75W x 4 (1kHz, ≤1.0% THD)
• Bridged (4Ω) 150W x 2 (1kHz, ≤1.0% THD)
• Speaker Impedance: 4Ω (2Ω to 8Ω allowable)
• (Bridged connection: 4Ω to 8Ω allowable)
• Frequency response (+0, –3dB): 10Hz–20kHz
• Signal to noise ratio: 89dB
• Low pass filter frequency (–12dB/oct.): 50Hz–200Hz (variable)
• High pass filter frequency (–12dB/oct.): 50Hz–200Hz (variable)
• Preout: 5V (Max)

JVC KS-DR2001D Compact Mono Digital Amplifier for Compact Car, Marine, UTV and Motorcycle / Max Power 600W / 300W RMS @ 2 ohms / Wired Level Control Included -
• IP67/IP66 Waterproof & Dustproof
• ASTM B117 Rustproof
• Vibration-proof
• Increased Power Flow
• High Quality Capacitors
• Magnetic Shielding
• Speaker Level Input
• Wired Level Control Included
• System Expansion Ready
• x2 Paired Parallel Speaker Cables

Specifications:
• Audio unit
• Max Power Output: 600W
• Rated Power Output
• Stereo (4 ohms) 200W x 1 (20Hz - 200Hz, less than or equal to 1.0% THD)
• Stereo (2 ohms) 300W x 1 (100Hz, less than or equal to 1.0% THD)
• Speaker Impedance: 4 ohms (2 ohms to 8 ohms allowable)
• Frequency Response (+0, -3dB): 20Hz - 200Hz
• Input Sensitivity (+0, -3dB): 0.2V - 5.0V
• Signal to Noise Ratio: 97dB
• Low Pass Filter Frequency (-12dB/oct.): 50Hz - 200Hz (variable)
• Bass Boost Control: 0-+18dB
• Bass Boost Frequency: 40Hz / 60Hz / 80Hz