1. Built-in Bluetooth-compatible V5.0 receiver module and supports mobile device Bluetooth-compatible connection. 2. Supports digital audio conversion to analog audio signals. 3. Built-in high-performance DAC chip, supports 192K/24bit sampling rate. 4. Adopts the latest QCC3003 Bluetooth-compatible version 5.0 lossless transmission technology. 5. Adopts Bluetooth-compatible dedicated antenna for stable signal transmission. 6. Supports one optical and one coaxial input interface. 7. Supports one RCA and one 3.5mm audio output interface. 8. Supports output volume adjustment. 9. Ultra low power consumption. Specifications: Input: Bluetooth-compatible, Coaxial, Toslink Ouput: R/L stereo, 3.5mm jack headphone Bluetooth-compatible version: V5.0 Bluetooth-compatible decoding mode: AAC, SBC Bluetooth-compatible protocol: A2DP V1.3.1, AVRCP V1.6 ,HFP V1.7, HSP V1.2 Bluetooth-compatible distance: Greater than 10M Optical/Coaxial input audio format: PCM / LPCM Optical/Coaxial input sampling rate: 32, 44.1, 48, 96 and 192KHz Headphone amplifying power: 125mW x2 @ 32Ω Suggest headphone eesistance range: 16-300Ω THD: Greater than 0.0003% Frequency response: 20Hz - 20KHZ SN (Signal to Noise Ratio): Greater than 120DB Operating Temperature: 0℃ to 70℃ Operating Humidity: 10% to 85% RH (no condensation) Storage Temperature: -10℃ to + 80℃ Storage Humidity: 5%to 90% RH (no condensation) Power Requirements: External Power Supply Via USB cable Power Consumption: Max=5W Colour:Black Material:Metal Package Contents: 1 x 192KHz DAC Converter 1 x usb cable 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.