Looks like I'm good. Mine looks like one of the earlier models from before the high/low designation and should be the same as a high gain model. I can hear some hiss with the AKG branded buds that came with my S8, and it's way louder than I would have expected...gotta' be it. So far I like this little guy a lot and don't notice any problems. This is a very nice buy and awesome for people looking to use a device like this with larger headphones.
One quick question though...for you guys with newer units that came with the bigger clip and some 3.5mm cables to help mount to larger headphones, can you measure how long the cables are? I'm trying to figure out if I want to order one of those clip/cable sets or not depending on how long those little cables are.
I can measure it tonight for you once I get home if noone does it before then... My gear is on my desk. It's not super long though, it's pretty flush on my SHP9500s... I'd say approx 5 inches long.