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.
M31 In-Ear Headphone. Fun is what the M31 is all about, giving you a fun, punchy presentation with good space and enhanced bass. Providing warmth along with 5 color choices of the the cool two-tone housing, this earphone delivers! oThe Original M Series in-ear headphones have a fun sound with enhanced bass that doesn't intrude into the rest of the spectrum, giving you the bass you want...
“ 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
MEElectronics M6P-BK Sports Sound-Isolating In Ear Headphones with Microphone/Remote for iPod, iPhone and Smartphones (Black)
“ My first purchase from Meelectronics was M6P, I can simply say, Im just amazed by the quality of this product. I had many IEMs before in 30-60$ price range, but this truly indeed is my pick of them. Heres a detailed review on M6P : Accessories : Well, Meelectronics really cant go wrong in this part, they provide a solid package of Accessories for all of their products. M6P comes...” --hitme987
“ 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
“ Meelectronics R1 is a perfect IEM for Bass Lovers, With the recent price drop, this is a steal for bass heads. R1 has been redesgined and updated from the initial version and is very much improved a lot in terms of SQ. A complete review on R1 : Accessories : My purchase had a pretty good set of accessorries though the official website doesnt show some of them, My R1 package came...” --hitme987
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
MEElectronics Clarity Series CC51-BK Ceramic In-Ear Headphone for iPod, iPhone, MP3/CD/DVD Players (Black)
“If Apple once decided to replace their earbuds, the'll surely need to chose Mee CC51. In white ceramic case - their look are really outstanding, especially with iPhone. As for sound - I like, how they plays. Very musical coloring, making listening a real pleasure. ” --cleg