I feel like this product may have been rushed to market.
Ibasso's a great company - I have and love the T3D, and have owned the T3 and the D4 previously and loved them both.
But what's with these stripes? And the rubberized battery door that wont stay closed no matter what you do, so it's always sticking out? And the inability to charge the unit and listen to it at the same time?
Being fed from seriously good sources, I consistently preferred the T3D to the T5, and was shocked and embarrased for thinking so, but you have to go with your ears. I'm going to go back to the Pico Slim, if I can find one - best iem amp I've ever heard, and I've owned the RSA Shadow, the Pico Slim, the iBasso D4, iBasso T3, iBasso T3d, Meier Corda HeadSix, Cmoy, and a few desktops.
I would email iBasso. I can charge and listen and find it better than the T3D.