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.
Technical Details * Impedance:32 ohm(at 1KHz) * Frequency response: 20-20,000Hz * Sensitivity:120 dB (at 1KHz) * Max Input Power: 400 mv
“ The PK3 is a great, warm earbud. It does vocals especially well because it is very mid-focused. It has impressive bass extension, not especially strong impact; the trebles are smooth and may roll off too soon for clarity and detail nuts. But the mids are what the PK3 are all about. ” --kmhaynes
“The reason why i bought these earphones was just the special offer I found about 2 years ago. They were sell in bundle with a 16GB pendrive for about 45€, so I paid them less than 30€ or something close. For that price there can't be any remorse. The box is just splendid, inside you can find a strange circular small case for the eraphones (actually not that handly), airplane adapter and...” --JamesTrab
“ 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 are a nice, portable IEM, a good, bassy stepping stone in your quest for audio perfection. My only problem is the rubberized cable, when anything touches it, it makes alot of feedback. ” --slaw slaw
“ 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
The t-JAYS One uses JAYS silicone sleeves which work to lower any intrusive surrounding noise by up to 40dB, ensuring a better listening experience in ambient environments. And in turn this means the 10mm earphone speaker does not distort as the media player’s amplifier does not get overloaded.
“a-JAYS Five Quick Review Thanks to JAYS for the sample. Full review at http://www.head-fi.org/t/695893/jays-a-jays-five-review Brief: JAYS notice that there are phones not made by Apple. Price: £80, Euro 90, US$100 or SEK795 Specification: Remote: Full feature Android remote, Driver: JAYS custom A5, Isolation: ...” --mark2410
On a-JAYS One+ we've added a one-button remote with a built in mic so you can control talk and music on your mobile device. You get the same award winning sound as on a-JAYS One and our beloved tangle free cables. Out of the box you can control Play/Pause, Answer/Hang up and with the free of charge JAYS Headset Control App for Android you will be able to add functions such as volume...