Anyone who owned JH11 who fell the same way as I do? First, it seems the positioning of bass guitar it so up front so it's kind of blurring other instruments. Second, still on low region, there is not enough low bass, compares with my previous um3x, um3x performs more deep low bass and much...

I owned old DT250 - 250 ohm Headphones, unfortunately one of the driver doesn't work properly, it's produce unbalance sound and uneven volume between them. So my question is it can be repair or fixed? Is there any contact I should make