“ 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
“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. First I tried them without the foam covers and they sounded awful. I originally thought I had been sold a pair of fakes but after using them with the full cover foams I am impressed. they have good definition and separation in the mid and high frequencies. The bass is...” --thebluebulk
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.
“ 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
“These buds came from amazon I was simply looking for something more suited to the bass head genre of music that really packed a punch. True these do pack a punch but to be very honest with you all they only pack a punch. The bass is actually extremely poor, there is a difference between punch and tight punch. The bass in these gives a punch that makes your ears rumble but the actual detail and...” --Hawkinssa
“I really like this earphone because it gives you wonderful sound quality at a reasonable cost. When I started listening to all the songs on my laptop with this earphone and also all of the smooth jazz, it was as if the whole world was cut off because of the noise cancellation. I use it on the airplane and I couldnt hear the tons of babies that were on the plane . I tried it with three...” --SandyMan
Technical Details * Impedance:32 ohm(at 1KHz) * Frequency response: 20-20,000Hz * Sensitivity:120 dB (at 1KHz) * Max Input Power: 400 mv