Features: Independent knob adjustment for low (LOW), middle (MID), and high-frequency (HIGH) controls. Advanced gain and frequency controls offer extensive voice shaping capabilities. Highly sensitive to volume changes and performance dynamics. Easy handling of both commanding and rhythmic vocal performances. High-frequency adjustments (3.5~4.3kHz) ensure clarity for SOLO or rhythm sounds, controlled via the Boost knob. Durable aluminum alloy metal shell that's lightweight and compact. Mini compact size for portability and ease of operation. Equipped with a non-slip silicone pad for secure installation, preventing shifting during performances. Specifications: Material: Aluminum alloy Input Impedance: 1MΩ Output Impedance: 600Ω Running Current: 35mA Item Size: 108 x 69 x 32mm / 4.25 x 2.72 x 1.26in Item Weight: 283g / 10.00oz Package Weight: 327g / 11.56oz Package Size: 12.5 x 8 x 5.7cm / 4.92 x 3.15 x 2.24in Package Includes: Effect Pedal Silicone Pad User Manual (English) Note: Please use a DC +9V power supply with a positive outer and negative inner connection. Ensure the input and output sockets are properly connected to this unit.