Hal Rockwell
500+ Head-Fier
intereferences due to possible poor shielding design in the meizu hifi non pro is a very good reason to not buy it, but i'd investigate a bit to check if it was not a single feedback caused by a faulty unit because shielding is the basic feature you need in an dac and it is very improbable that meizu engineers ****ed this up.
note that dd tc35 has the same CS42L42 chip as musiland mu1 but there may be differences in implementation.
anyway exploring different upgrade paths is a good strategy, please share back in a few weeks what was (at similar upgrade cost) the biggest difference to your ear between 1/ upgrading your dac and 2/ trying a different iem sound signature
How is the TC35 has the same DAC as the Musiland MU1?