A12 is a high-quality audio player launched by SMSL. It uses a new silicon carbide digital power amplifier chip from Infineon of Germany, which has an efficiency of up to 92% and further reduces power consumption. It supports USB audio input and is free of driver. Supports U disk playback; with high/low tone adjustment function, easy to match various speakers and music; Bluetooth 5.0 reception, better sound quality and longer transmission distance; full aluminum alloy CNC processing technology, anodizing technology, fine workmanship, and excellent touch; a lot of high-grade audio components to enhance the subjective sense of hearing; high-quality gold-plated input and output terminals; complete over-temperature, over-current and other protection circuits; audio-specific high-quality power adapter.