Despite the sound issues, i was still able to test several games with the Supaboy.

The only ones I had issues with were Kirby Super Star and Super Mario RPG (neither would load), and Yoshi's Island has some sort of visual feedback happening (like when a cable isn't properly shielded). Hopefully this is all taken care of when Hypkerin calls me back to set up an exchange/fix. I spoke to them 2 hours ago and still haven't hear back.