Basic Functions: DTS / AC3 5.1-channel audio decoder Design Concept: This DTS / AC3 audio decoder is designed to decode digital audio output from devices such as PCs, laptops, Xbox 360, HD players, HD set-top boxes, Blu-ray players, and DVD players supporting DTS or AC3 audio formats. It enables high-quality 5.1-channel surround sound playback in homes, classrooms, public spaces, concert venues, and cinemas. Functions and Features: 1. Decodes DTS / AC3 digital audio signals into analog 5.1-channel audio signals. 2. Converts analog stereo (L/R) input into analog 5.1-channel audio output using an audio processing chip. 3. Inputs: 2 x optical SPDIF, 1 x coaxial SPDIF, 1 x stereo analog input. 4. Outputs: Multi-channel analog audio outputs for easy connection to amplifiers or AV receivers. 5. One-touch switching between stereo and 5.1-channel modes. 6. Signal-to-noise ratio: 120 dB 7. Dynamic range: 80 dB (at 1 kHz) 8. Frequency response: 20 Hz – 20 kHz (±0.5 dB) 9. Analog output level: 2.2 V Note: Slight variations in appearance, color, or labeling may occur between production batches. These do not affect functionality. Dimensions: 105 × 75 × 25 mm Material: Metal Color: Black Package Includes: - 1 × Audio Decoder - 1 × USB Cable - 1 × Optical Fiber Cable Other accessories shown are not included. Note: Screen settings and lighting conditions may cause slight color differences between the product image and the actual item. Measurement tolerance: ±1–3 cm.