iBasso amp 4S added to the mix

Lets see how it fares against the iBasso amp 4


  1. Could you give a brief description of pros/cons of the 4 vs 4s?

  2. I do need to get onto it and update my iBasso amp section.
    I find the Amp 4 to be a more neutral and natural mix.
    And the 4S to be a bit more active.

    Have a look on head-fi or twister6 reviews there have been some great comparisons there already.