“ 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
“ 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
“Overall I really like these IEM's, I purchased them after having tried out just about ever skull candy earbud (which are fine for the price you pay). But, I am an audiophile and my full sized gear and my car gear is just so far superior that I was really missing some decent sound where I could't use my other equipment. So, I decided to look for some good earbuds. After...” --tswmcello
“ 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
The SE-CL07s let you get closer to your music with high performance portable audio earbuds available in assorted colors to match your personality or lifestyle. This set comes with 4 different sleeve sizes, ensuring a perfect fit into any ear canal, a 10 mm large diameter driver for great bass and improved sound quality, and the reliable Pioneer brand, ensuring lasting quality and durability....
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.