Same! I've had issues with faulty 3.5 and 2.5mm the past with my other zishans but this is something different only hearing one channel when not fully in. When I compared the DSD Pro vs the T1 it appears the gold plated terminals don't line up?? The headphone jacks is one my pet peeves that I have about the zishans. I have found that they are harder to replace than most people think!!!