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.
“ Well, this has been quite the turn of events! I had auditioned a full-sized Monster headphone, which I felt rather negative about, but the Turbine Pro Gold (TPG from here on) caught me quite off guard. Overall, the TPGs are excellent sounding, have superior build quality to many earbuds and IEMs I’ve owned/seen and offer a wide array of tips for fitted comfort, so let’s explore what makes...” --Landis
“Looking at the picture of the PK3's I wasn't expecting much. They look and feel cheap using a generic case for the drivers making them easy to fake. (In fact my first pair were fake!) these earbuds sound GREAT! Especially considering the price ($44) I have a few pair of earbuds in this same and higher price range and these PK3's knock all of them out of the water. They have a flat sounding...” --thebluebulk
“ 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
“ Overall I have been satisfied with these phones. I would not recommend paying full price for them like I did. ” --Skoch
“ I was selected to review these headphones in exchange for honest review, that review follows: I have used a lot of different headphones of varying prices and have been enjoying the Monster Turbine Pro Copper headphones ever since I received them. In short, they are now my IEMs of choice. Before even listening to the headphones, I was impressed by the packaging and the way I could...” --schalliol
“ I would say that burn-in is a must for this earphone. Before burn-in, the earphone sounded unimpressive. I almost wanted to return or sell it off. It sounded so much better after burn-in. The first thing that I noticed is the bass. There is a good quantity of it (once you get a good seal) but it is not muddy at all. It was very punchy. Using it for movies proved quite...” --regleo
“So I'm relatively new to the world of high end headphones, and I've started by experimenting with over the ear cans, I'll move onto IEMs eventually, but I feel like these guys get a bad rap. As for what I like, I like to listen to my electronic music, so the bright (and not overshadowed) highs and thumpy bass make for a good, enjoyable time. I wish the mids were as present, but this is...” --AtomikSound
Yao Ming and Noel Lee have created Yao Monster, bringing their passions to the world of consumer electronics and lifestyle products. Yao Monster brings revolutionary products of technology and fashion to share and inspire others. It is the unsurpassed fusion of east and west. It is a fusion of ideas and ideologies. It is a fusion of technology and fashion. It is a fusion of technology and life....