“Looking at the picture of the PK3's I wasn't expecting much. They look and feel cheap using a generic case for the drivers making them easy to fake. (In fact my first pair were fake!) these earbuds sound GREAT! Especially considering the price ($44) I have a few pair of earbuds in this same and higher price range and these PK3's knock all of them out of the water. They have a flat sounding...” --thebluebulk
“This is my second CIEM after purchasing Rooth's LS2. I own the Shure 535s as well. My sources as are iPhone 5C and Sony NW-F880, no amps. The LS4 has two bass drivers, so obviously this isn't for people who like monitor like sound. The bass is not overbearing, yet enhanced. There is a nice deep rumble, but not to the point where mids and highs are drowned out. The LS4 manages to...” --Yamato1
“ These were my sweetest sounding head-gear yet. It would be brilliant all-rounder if it would not require a portable amp for portable use. This is the first reason i left it, otherwise i almost got an ear infection from those foams.., they get dirty in a few weeks of massive use. I recommend them to clean, i boiled them in water. ” --angevoi
“Preamble Singaporean. I'm an 18 year old with great love in my music. My father has an extensive collection of home stereo equipment and have exposed me to good music since young. I have realized that I have a skill to recognize sound signatures and am able to express my ideas coherently. My favourite genres are Rap, R&B, Pop and some Rock, along the lines of Avenged Sevenfold and...” --Raddiqal11
“ Well firstly this is not a true iem. The sound is about as great as one could get from an earbud. In my limited experience and without trying the pk1, I would say these are the finest buds you can buy. With that said, these are not for everyone, this is a niche product within an already niche market. I find driving it with my D12 anaconda makes for a pleasurable sound,...” --Jamesdeandoa
“ Overall I have been satisfied with these phones. I would not recommend paying full price for them like I did. ” --Skoch
Features - Amazing detail and clarity - Extremely smooth and liquid across the frequency spectrum - Powerful bass with great tactile performance
PK2 earphones are the low impedance version of PK1. Although not as good as PK1, PK2's sound signature is similar to PK1. You don't have to drive PK2 with an expensive head-amp. If you are looking for something with high performance/price ratio, PK2 might be the best choice.