I made a thread before asking for a recommendation based on certain criteria I set, you can find this here: http://www.head-fi.org/t/613512/earphone-recommendation-wanted
After some comparing and reading I finally decided to buy the quite unknown IE60. I say unknown because they do not show up on any big IEM review topic on head-fi.org and as such I doubted a long time before finally making the step and ordering them.
My initial choice was the Audio Technica ATH-CKS90 but a friend of mine said they sound too soft and not “true” enough so he recommended the IE6. Sennheiser stopped producing the IE6 and as such I could only buy the IE60. I paid 1650 RMB (Chinese money) for them which equals to about 259 USD which is also the price advertised on the Sennheiser USA website.
<< June 11, 2012>>
I just received my IE60's this morning and here is a first review. Since they have not been "break-in" yet the below is based on headphones that played for 30 minutes :-)
I first ran Tchaikovsky: Piano Concerto No. 1 and at the opening the trumpets already gave me goosebumps, when the piano started it sounded a bit more flat but that could be due to the fact they only play such short time span. Once the rest of the orchestra combined with the piano everything sounded as it should. The cellos are outright amazing to hear, the bass (and sound range in general) is so full and warm, I felt like sitting right in the middle of the orchestra.
I went out for lunch and some errands and left the headphones 3 hours on http://www.jlabaudio.com/burn.php ‘s audio burn in track... After coming home and playing Tchaikovsky: Piano Concerto No. 1 again, the trumpets sounded a bit deeper and the bass in general actually felt a bit smoother, the piano also became more alive. Hints of treble I did not notice before are there now and I can even more clearly distinguish the different instruments in the orchestra. Even so much I noticed the piano’s click as pianist’s foot moved from the pedal. The detail is outright astonishing and if a headphones only gets really good after 40-200 hours of playing I am sure the IE60 will keep on surprising me.
After this I felt it was time to step up the sound a bit and I went straight for the Skrillex – First of the year (Equinox). The bass just blew my mind, I never thought a bass could come from such small earpieces. Again the sound pulled wide open in my head and I got the goosebumps… Lol thinking about it now… getting goosebumps from Skrillex is outright funny. When the machine sounds came on at 53 sec it was outright insane, details I never ever heard in this song came out brilliantly and the stereo sweeps really blew my mind. Bass was punchy and full, the mids came out really well but did not overwhelm (or underwhelm) and treble was not affected at all, everything was hair sharp and felt really “right”. Using http://www.audiocheck.net/Audio/audiocheck.net_frequencychecklow.mp3 I can could hear the bass frequency come in the middle between 10 to 20 Hz.
I felt the quality improved since I listened about 3 hours ago when I just opened the box. Either that or my ears just got adjusted to the fine detail of the headphones.
<< June 13, 2012>>
I left the headphones on the JLAB Audio file for another 40 ish hours and I must say the sound matured slightly. The sound became a bit fuller, a bit “deeper” and mids came out a bit more. There still is a very excellent beautiful treble. Skrillex's sound spectrum improved further, bass went a bit deeper and fuller again, mids a bit more noticeable but definitely not overwhelming, treble still very sharp… really impressive. http://www.head-fi.org/t/592609/sennheiser-ie60-review reviewed the IE60's too and mentioned the guitar is really astonishing... I tried it with Coldplay - Us Against the World. I agree... guitar really comes out great! This is probably due to the wide sound spectrum and fine treble.
I wholeheartedly recommend this headphones to people who love a seriously bassy yet very detailed headphones with “full” soundspectrum experience. The ear pieces are also extremely comfortable, no pulls from the wire because they go up and around the ear before going down, there are no microphonics at all. I know they are not balanced drivers, but if they were I am sure the bass would not have been as good as it is now… as such I am an extremely satisfied customer.
If I compare the IE60 with the http://www.head-fi.org/t/478568/multi-iem-review-242-iems-compared-vsonic-gr99-gr02-bass-edition-added-06-11-12 thread I’d say they are...
Details: Sennheiser IE60
Current Price: MSRP: $249.95
Specs: Driver: Dynamic | Imp: 16 Ωs | Sens: 115 dB | Freq: 10-18,000 Hz | Cable: 3.9’
Wear Style: Over-the-ear
Build Quality (5/5) – The housings are made of sturdy plastic and very ergonomic. The cord is light, strong, flexible but not detachable. The L-plug is silver plated which is means it is more durable.
Isolation (4.5/5) – I had to take out my headphones to hear what the person sitting next to me said. The isolation is top notch, the box advertises it blocks at least 20dB when inserted properly in your ears.
Microphonics (5/5) – Micorphonics are nonexistent.
Comfort (5/5) – The housings are very light and actually surprisingly small for a dynamic driver IEM. Over-the-ear clips helps those who have difficulties getting the wire to stay in place and the shirt clip does the same for unwanted cable pulling.
I have not much to compare with regarding sound so I cannot put an accurate number on that.