1、【Advanced Compressor Pedal】: This advanced compressor pedal smoothens out the dynamics between high and low frequencies without degrading the original sound. It offers a more even and robust sound, enhancing your guitar performance. 2、【Versatile Functions】: Equipped with COMP (compression intensity), TONE (brightness), and LEVEL (output volume) controls, this pedal provides superb sound shaping. It\u0027s versatile and easy to use, making it perfect for both beginners and professionals. 3、【Two Practical Modes】: The guitar compressor pedal features a switch for NORMAL and TREBLE modes. This allows for signal transmission in two different modes, catering to a variety of playing needs. Enjoy warm, smooth, and classic sounds in your performances. 4、【True Bypass】: The true bypass design provides a transparent tone. The signal remains completely intact during transmission, with no bursts, hums, or electrical noise, let alone losses in intensity and frequency. Please note that the power adapter is not included. 5、【Compact and Durable】: With a metal shell, this mini guitar effect pedal is not only compact and exquisite but also durable. It has a 1/4\" mono jack input (impedance: 10K Ohms) and a 1/4\" mono jack output (impedance: 1K Ohms). It requires a DC 9V power supply with a negative center.