![]() ![]() If you use a sound card then chances are even more expensive sound bars won't surpass it's DAC capabilities. If the sound card was cheap then HDMI would produce better quality. ![]() HDMI is usually the least convenient of any audio cable you could be using. The whole point of digital sound is to prevent degradation of audio quality through the cable but if it's digital which all these cables are, then use whatever is convenient. HDMI is equivalent to Digital Coax, to optical. It's literally between the DAC's of the sound card vs your Sound bars DACs. If you have a quality sound card like an Asus Xonar or Creative Sound Blaster, the 3.5" jack would likely produce better quality sound. It's likely PCM stereo which isn't bad but nothing special to want to use HDMI. The 3.5" connection provided by your PC would likely produce better quality than the sound bars internal Sound Audio Decoder. But really a sound bar is a cheap speaker+receiver combo that does the job. HDMI carries digital sound but for that sound to work would be determined by the audio decoding device, like a receiver, or in this case a sound bar. For music that's probably already coming from a compressed source, nah. If you also use your PC to play movies you should be aware that the 3.5" connection isn't going to provide HD audio streams that are encoded in some discs and will end up downsampling to a 2-channel PCM and you might notice some difference there. To me, no, you're not going to notice an audio difference for listening to music through 3.5" stereo cable versus HDMI. ![]()
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