As the requirements for safe broadcasting and program quality from radio and TV stations gradually increase, it is not only necessary to ensure balanced sound volume but also to meet higher standards for audio quality. Special processing techniques, such as adding audio effects, may even be required to cater to various usage scenarios. Therefore, an audio processor is a device we frequently need, capable of helping us control music, background scores, vocals, and more, producing different sound effects in various settings to enhance the quality of program music. The SLAPC-4000 series is a new multi-functional digital audio processor developed by Hunan Shuangln Electronics Technology Co., Ltd. The product features a rich array of input sources (analog, digital, AoIP) and intelligent master/slave switching. The audio processing process includes gain adjustment for input/output channels, phase correction, feedback control, noise suppression, echo, reverb, 5-band EQ, dynamic effects/5 bands, bass enhancement, AVC, and other processing functions. Multiple effect combinations ensure high-quality output. The output end also supports a custom routing configuration mode, allowing you to select not only the processed signal but also any input source signal, catering to various scenarios. Diverse input and output, intelligent audio/effect processing ensure high quality and stability of the product; freely definable parameters can be adjusted, and multi-channel effect calls (automatic, manual, WEB interface, broadcast system linkage, etc.) can meet various objective scenarios and multiple fields, including radio stations, TV stations, studios, school education, music events, and corporate broadcasting.