Dynamic Microphone Amplifier High and Low Bass Adjustment Home Sound Power Amplifier Item Type: Microphone Amplifier Material: Aluminum Alloy Gain: 60db High Mid Low Sound Adjustment Range: ±15db Working Frequency: 20HZ-20KHZ Power Consumption: Approx. 0.6W Interface and Knob Description: 1. MIC IN Input Interfaces: 3.5mm, 6.5mm, XLR 2. MIC OUT Output Interfaces: 3.5mm, 6.5mm, XLR 3. Power Switch 4. Power Supply Interface: DC 5V-12V, Comes with USB to DC cable for power supply, Compatible with power bank or excellent phone charger (Note: Ensure clean power supply to avoid noise interference) 5. 48V power supply switch (only for professional XLR capacitive microphones, do not turn on for dynamic or regular handheld capacitive microphones) 6. Low mid high sound adjustment knobs with ±15db range 7. GAIN adjustment for different types of microphones 8. LEVE output level volume adjustment for optimal performance.