Introducing the Cayin C5 Portable Hi-Fi Audio Headphone AMP Amplifier. This amplifier offers high-quality audio amplification for your headphones, allowing you to enjoy your favorite music like never before. The amplifier is compact and portable, making it easy to take with you on the go.

　　The amplifier is in excellent working condition and has been thoroughly tested. It is designed to work with lithium-ion batteries, which are included with the equipment. This equipment contains hazardous material, as the lithium-ion batteries are contained within the equipment. The Cayin C5 Portable Hi-Fi Audio Headphone AMP Amplifier is perfect for anyone who wants to take their music listening experience to the next level.