“I have seen these recommended by many, reviewer and consumer alike. It' has been given praise for being an excellent replacement, and even a step up, from those iBuds and Earpods that are included with every iPod and iPhone. Some have even said that these make a great starting point for anyone interested in better audio. So, do these live up to their reputation? Well, as always, I will...” --SlimShadyMJ
“ 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
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
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“ 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
“ 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
“ These were the first IEMs I bought that were over 50$ after reading good reviews on it. Unfortunately I don't think they live up to the hype. They are definitely better than some of the other consumer-oriented brands such as Beats, Bose, etc. but they are not worth 70 or 80$. Note: I do not have my fully functioning S4 anymore because I recently lost it. (long story) The one I...” --FYLegend
“If you look at my profile, I stay within a small range of products that have worked for my son and I. These include V-Moda, Westone, Audio Technica and Klipsch. Each have their own strenghts, like Westone does a bang up job of creating high end sound in an over the ear wearable IEM, V-Moda has some seriously well built headphones that have a very nice sound and the Audio Technica...” --DaddyMojo
“I recently bought a pair of Klipsch S4A because of their glowing reviews on certain tech websites. I figured I'd finally try out a Klipsch product to see what they sounded like. Overall, I don't mind them, but there are some LARGE issues with these IEMs. I gave the S4s a 20-ish hour burn period before I began to analyze their sound quality. Before the burn in, I did a bit of...” --DirtyHarry98