Usage Tips:Easy-to-Use Bass Amplifier: The headphone bass amplifier is designed for simplicity and ease of use. All parameters are clear and straightforward, making it easy for you to achieve the perfect sound. Three Built-In Speaker Simulations: This amplifier features three built-in speaker simulations, each based on the modeling of the world's most famous amplifiers. Each simulation offers a wide range of tone adjustments, allowing you to customize your sound to your liking. Versatile Sound Options: From clean and natural tones to warm overdrive and even heavy metal, this amplifier has it all. It also features classic speaker sounds and peripheral effects, providing a rich and immersive sound experience. Multiple Modulation Tones and Delays: The amplifier offers three different modulation tones and three delay or reverb tones, enhancing your performance and allowing you to create a variety of soundscapes. Type-C USB Port for Charging and Recording: The amplifier comes with a Type-C USB port, which allows for charging, OTG internal recording, and auxiliary input for backing tracks (AUX IN). This enriches your musical expression and makes your performances even more dynamic. Specifications: 3 Built-in speakers simulate tone 3 Different modulation tones 3 Types of delayed or reverberated tones Battery Capacity: 600mah Product Weight:68g/2.4oz Type:for Guitar/for Bass Colour:Black Material:Plastic Size:9.7x3.5x4.3cm/3.8x1.4x1.7inch Package Contents: 1 * Amplifier 1 * USB Cable 1 * Audio Cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.