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Thread Starter 
Hi guys!
I use my Z1 phone as my everyday music source. If I want to make my ER-4 PT to ER-4S with a converter cable do I need only an amp or a Dac/amp to make it sound even better? For this combo is it worth to get anything like Pico slim or Apex glacier or a cheaper fiio enough for it? I mean SQ-wise would it be better with a more expensive amp or DAC/amp?