JVC KS-DR2104DBT 4Ch Bluetooth Amplifier 50W & KS-DR2001D Mono Amp 300W

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