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Thread Starter 

Please help, W50 or UM 50 Pro?

I am using iBasso DX50, most of my music are WAV format.

I am currently using um3x and want to upgrade it to W50 or UM 50 Pro.

1. Do I need to get an AMP for W50 or UM50pro?
2. What are the difference between them? 

Thanks for helping^^!