The SLBD-200D series is a newly developed high-precision, low-latency, networked digital audio delay device by Hunan Shuangln Electronics Technology Co., Ltd. The product features a rich array of input sources (analog, digital, AoIP) and intelligent master/backup switching. The audio delay process includes gain adjustment for input/output channels, phase correction, rapid delay setup/deactivation, slow delay setup/reset, preloading, direct pass-through, coughing, and clearing functions. The output end supports a custom routing configuration mode, allowing not only the selection of delayed signals but also any input source signal, catering to various scenarios. Diversified input and output, master and backup dual machine linkage, multi-terminal synchronous control, multiple synchronization modes can meet different objective scenarios, as well as multiple fields, radio stations, radio and television stations, broadcasting studios, school education, live sound and performance, recording and post-production, public broadcasting and conference systems and other scenarios.