Feature: 1. This 10-band equalizer can precisely control 10 guitar center frequencies, including a single slider for input gain. 2. Produce a variety of excellent sound effects on one effector, while still having the ability to customize effects. 3. This equalizer is silent, durable and easy to use, with a true bypass design, so even if it is turned off, it will not affect the guitar's tone. 4. The lowest frequency band is 31.25Hz, and the highest frequency band is 16KHz. The best sound effect can be achieved by properly adjusting the mid-band sound. 5. This electric guitar effect is made of metal, which has good strength and corrosion resistance, and can prevent impact. Specification: Item Type: Guitar Effects Power Supply: 9V DC center negative pole (not includ 9V power supply or battery) Current Consumption: 30mA Size: Approx. 11.9 x 9.4 x 3.8cm / 4.7 x 3.7 x 1.5in. Package List: 1 x Guitar Effects1 x Battery Cable1 x Effect Pad Note: 1. Please pay attention to the power requirements of the product.2. The product needs the customer to purchase an external power supply before it can be powered on.