I haven’t noticed it with my Saturn (model 2). Some things that come immediately to mind that might have an affect:
Audio Options -> Down-sampling
Compatibility -> Full TX setup
I have found that neither of my capture devices handle the audio well unless Down-sampling is ‘on’. That is true for output from any console. It doesn’t seem to affect my TV either way, though…possibly ‘off’ provides slightly crisper audio, but I’m not completely certain of that.