[a_tumiwa]

Top Line earbuds only have 4 choices until now:
Yuin Pk1, Yuin Ok1, Crossroads HR1, or ATH CM-700ti

the most favourite one is Yuin pk1

 

[adalyan]

I have had both. OK1 is a great achievement however I have kept the PK1. IMO it has better PRAT and gives 'the big picture' better than OK1. OK1 is great but analytic. IMO PK1 is more similar to the Grado sound. I do not feel any culture shock when I put the PK1's after my SR225's. But looking at other responses everybody hears differently. To sum it up: If you look at the tech specs and music in a micro detail OK1's are closer to Grado. If you think about the music as a whole and the feeling you get from it PK1's are closer. Both are great phones. PK1's may also be better for wearing outside because of their elevated bass and front mid-range.

 

[kostalex]

Well said, adalyan. I agree with every word and have nothing to add.

 

[a_tumiwa]

i miss my pk1

if you have pk1, dont sell it or you will buy it again !

 

[wantmyf1]

I prefer my OK1 to my PK1 but don't think that either actually sounds like the 325is's I had.