Ultra-compact design for easy portability and use in studio and stage settings.Power up to four pairs of headphones with independent volume control for each.Compatible with 3.5mm headphones, making it easy to connect and use.Original design with power switch and 3.5mm headphone output for convenience and cost-saving.High-quality sound even at maximum volume levels. Introducing the headphone amplifier, the perfect solution for studio and stage applications. This ultra-compact amp is designed with a power switch and 3.5mm headphone output, setting it apart from other 4 CH headphone amplifiers. With the ability to power up to four pairs of headphones simultaneously, this amplifier is a real money saver during meetings or recording. The easy-to-use design allows for independent volume control for each pair of headphones, making it compatible with any 3.5mm headphones. Experience great sound quality with the four independent stereo high-power amplifier sections that maintain high sound quality even at maximum volume levels. Suitable for various models, this ultra-compact stereo headphone amplifier is a must-have for any audio enthusiast. Upgrade your audio experience with the headphone amplifier today Item Name: Headphone Amplifier Material: ABS Maximum Impedance: 47KΩInterface: 3.5mm JackPower Supply Voltage: 5V 1ASocket Type: Eu Plug AdapterFeatures: Portable, 4 Channel, Stable Output Size Details: L: 9.7cm/3.82", W: 5.5cm/2.17", H: 2cm/0.79" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Headphone Amplifier1 x Eu Plug Adapter