Certified Quality Assurance: This mini amplifier is ensuring compliance with international safety and environmental standards. Manufactured in Mainland China, it meets rigorous quality controls for reliable performance. Advanced Audio Technology: Equipped with the CX31993 chip, this headphone amplifier enhances audio decoding to deliver high-fidelity sound. It supports headphones with an impedance of less than 32 Ohm, making it ideal for personal audio enhancement. Convenient Connectivity: Featuring a USB input type, this amplifier connects seamlessly with your devices. Although it lacks WIFI and Bluetooth capabilities, its direct USB connection ensures stable and uninterrupted audio transmission. Portable and Durable Design: Constructed from plastic, this lightweight amplifier is designed for durability and ease of transport. Its compact size makes it an excellent choice for enhancing audio on the go, without the need for a built-in battery. Output Specifications: The amplifier provides a LINE OUT (AUDIO OUT) output type, allowing for easy connection to external speakers or additional audio equipment. This feature ensures versatile use across a variety of audio setups. CX31993 Upgrade Version DAC Sampling Rate: 32bits/384kHz Output Power: 28.2MW@32Ω Signal-to-Noise Ratio: 100dB Dynamic Range: 105dB Distortion: -95dB Frequency Response: 20Hz~20kHz Crosstalk: -55dB DSD PCM: 32-bit/384kHz Color: As Shown Material: Plastic+Metal Package Contents: 1* Digital Decoding Headphone Amplifier 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.