Cygnus! Hyogen no senshi - S1-E3
Audio problem: To satisfy his weird mother fetish, Hyoga dives with a rose in his mouth, but that does not prevent him from shouting his battle cry. (00:07:00)
Taose! Ankoku Phoenix gundan - S1-E8
Audio problem: After Hyoga has killed the Black Saint and it has turned into ice, you can hear the sound of the ice breaking even before you see the character shatter into pieces.
Shito! Kyofu no kokushiken - S1-E11
Audio problem: Hyoga butts in with "What did you say you just saw, Ikki?", but Ikki was THINKING that phrase about seeing the battle, not saying it out loud - unless he was practicing ventriloquism without an audience. (00:21:50)