Wasn't able to meet him as he was away from KL, but went to macstudio lyn he recommend and they give my discount immediately without any question

I also got the chance to audition it before getting it (luckily as the E1 which I wanted to get will not fit into my iPhone with the case on so I picked E5 instead), very friendly guy on macstudio.

The E5 gives my Yuin Pk2 the needed bass that it is lacking from.