Pinout example (DB25 – TASCAM standard):

While not strictly necessary for sound quality, having an LCD panel that displays the input mode (e.g., "DTS 5.1" or "PCM") and volume level makes troubleshooting much easier. A remote control is also vital for adjusting the volume without getting up from the couch.

Are you planning to or build a completely new system from scratch? 4K HDR10 HDCP 18Gbps HDMI 2.0 ARC Dolby Atmos Extractor

A is an essential piece of hardware for audiophiles and home theater enthusiasts looking to bridge the gap between high-definition digital sources and traditional analog sound systems. These kits decode complex, compressed audio bitstreams—such as Dolby Digital and DTS—into discrete analog channels, allowing you to experience immersive surround sound from Blu-ray players, gaming consoles, and streaming devices. Top 7.1 Decoder Kits and Boards

Many consumers make the mistake of buying a cheap "HDMI to RCA converter." These devices usually only convert the stereo track (2.0). If you try to feed them a 5.1 or 7.1 signal, you will hear static, silence, or only the left/right channels.