1、The product adopts for Qualcomm QCC3008 and supports APTX which can make sure the stability of connecting 2、The op amp uses better OPA1611 and OPA1612, stable performance and standard specification 3、The USB uses XMOS208 imported chip which can ensure the durability and stability of the product 4、Adopted of high quality electronic components, and accuracy process, ensure for the durability 5、Equipped with antenna, the input supports coaxial, optical, USB and Bluetooth Item Type: Decoder Material: Aluminum AlloyPlug Voltage: 100-240VAC Size: Approx. 103 x 150 x 40mm / 4.1 x 5.9 x 1.6in(length x width x height) Net Weight: Approx. 0.6 kg / 1.3 lb Input Support: Coaxial: PCM44.1k~192k 24bit/DOP DSD64 Fiber: PCM44.1k~192k 24bit/DOP DSD64 USB: PCM44.1k~384k 32bit/DSD64, DSD128, DSD256 Bluetooth: PCM 48K 16bit How to Use: 1. Accurately connect the interface according to the product identification 2. Turn on the switch to use 3. Turn off the machine after using, and then unplug the connector 1 x Decoder 1 x Adapter 1 x Antenna