Sound fidelity: fidelity sound reproduction with lossless FLAC and APE support, preserving audio detail for precise stereo imaging and an enriched hifi listening experience. Stable performance: Transceiver circuit with an integrated multidirectional antenna delivers reliable wireless connectivity and up to 12 m indoor range, enabled by an energyefficient protocol 5.0. Flexible connectivity: Universal USB interface compatible with HiFi systems, car stereos and speakers via direct USB playback; supports USB drives from 4 GB to 1 TB with automatic handling of common audio formats. Safe operation: Reinforced electrical design with surge protection, ensuring continuous and safe 12V DC operation in fixed and mobile installations. Use scenarios Home HiFi setup: Connect to a HiFi amplifier or speaker system and play lossless files from a USB drive (4 GB to 1 TB) to enjoy fidelity sound. Incar audio upgrade: Use with a car stereo or portable speaker via USB playback to enable quality music on the go. Mobile and fixed installations: Suitable for portable or fixed installations powered by 12V DC, with surge protection for enhanced reliability.