1Built-in high-performance RTOS operating system and audio decoding chip, support DTS/AC-3. 2Input: 1 SPDIF Optical, 1 Coaxial. Output: L-OUT-R; 3.5mm headphone port. 3Automatic switching between optical fiber and coaxial channel input. 4Automatic decoding of AC-3 / DTS (LPCM / PCM / RAW) signal input without any operation. 5High compatibility: Suitable for network player, HDTV, blu-ray DVD, DVD, PS3, XBOX 360, DM500S, DM800HD, etc. This audio decoder can auto convert optical / coaxial channel(Support LPCM/PCM/RAW) input to 2.0 channel analog audio output, and support decoding AC-3/DTS. So it is widely used in families, schools, squares, concert halls, cinemas and other public places to enjoy the shock effect of DTS. Suitable for network player, HDTV, blu-ray DVD, DVD, PS3, XBOX 360, DM500S, DM800HD, etc. Features: 1. Built-in high-performance RTOS operating system and audio decoding chip, support DTS/AC-3. 2. Super fast startup time is about 3 seconds. 3. Input: 1 SPDIF Optical, 1 Coaxial. Output: L-OUT-R; 3.5mm headphone port. 4. Automatic switching between optical fiber and coaxial channel input. 5. Automatic decoding of AC-3 / DTS (LPCM / PCM / RAW) signal input without any operation. 6. High compatibility: Suitable for network player, HDTV, blu-ray DVD, DVD, PS3, XBOX 360, DM500S, DM800HD, etc. 7. Small Size and metal case, anti-interference. 8. Adopt RCA/3.5mm Headphone port output ,convenient and efficient in use. 9. Support volume adjustment. Specification: Name: 5.1 Audio Decoder with Volume Adjustment Signal to noise ratio: 120db Bit rate: 16-24 bit Stereo insulation: 80db (1khz) Response frequency: -20hz - 20KHz +/-0.7db Channel imbalance: 0db THD: 20 hz - 20KHZ to 0.25 - 0.065% Sampling rate: 32-192KHZ THD + N: 1KHZ 0.15% Size: 8 * 7 * 2cm / 3.1 * 2.8 * 0.8in Weight: 195g / 6.9oz Analog output level: 2.2V Working voltage: DC 5V Maximum power current: 200mA Working humidity: 10&-80%RH (non-condensing) orking temperature: 0-70Storage humidity : 5% -- 90%RH (non-condensing) Storage temperature: 10-80Supports audio formats: MP3, AC3, DTS, WAV, WMA, AAC, ALAC, FLAC, APE, OGG, M4A Package list: 1 x Audio Decoder 1 x Audio Cable 1 x Micro USB Power Cable 1 x Manual Interface description: DC5v: DC5v power input Optical: Optical signal input Coaxial: Coaxial signal input L-OUT-R: left and right channel audio output Headphone: 3.5mm Headphone audio output Power: Power indicator light Knob: Knob for volume control Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.