Jvc Ks dr2104dbt 4ch Bluetooth Amplifier 50w amp 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 InstallationSpecifications• 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 CablesSpecifications:• 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