“ Heir Audio 5.0 Review Equipment used to feed the 5.0: Oppo BDP-105 head amp output with Sabre 32bit dacs. Tag Mclaren DVD32R feed by Chord Indigo digital coax into Oppo dacs. Sony X1060 Walkman & TTVJ Slim amp. 5.0 cable – stock and custom Whiplash Hybrid V2 Twag cable plus Hybrid LOD. It’s been a while...” --FortisFlyer75
“ 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
“ Got these at Amazon after a long search and much reading. Sound for the price is really good. Not in the same league with my Sony Pros or the Sennheisers but surprisingly close. I have them connected with a REALLY cheap headphone amp and the combo far exceeds what I expected. Clear, roomy, dead quiet. ” --Richard S
“ 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
“ In my recent quest for a new set of cans, I took a slight detour into the land of flashy prosumer headphones, in the form of the HK CL. The only reason I tried a pair was the price: half off, which equals $99. My first impression, upon opening the package, was of a quality product. The CL has a look and feel that makes it seem like the perfect match for an iPhone, iPod or...” --imagic
“ 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
On of two pairs of In-Ear earphones introduced at Apple's WWDC.
One of two pairs of earphones introduced at Apples WWDC.