I always burn in even though I'm not even sure if it really does anything.  I usually just let it burn in when I'm not listening to it for like the first week or two.  After that, I don't bother continuing burning in and just try to enjoy the headphones.   I downloaded a pink noise track a...

Haha.  I almost had a similar experience with these too.  My right side started getting really quiet after a few months of use in the office.   I got the Sennheiser MX471 about a month ago, and at first it felt like the bass was lacking.  I was really disappointed and missed the PK3s.  ~2...

My PK3 also went out with the left ear sounding a lot quieter than the right.  I loved the PK3's sound, but didn't want to get another pair to have it go out in a few months again (mine just sits at office cubicle.)   I'm also interested in replacing with another budget, but decent pair of...

Quote: Originally Posted by fallingreason how long can I expect my PK3's to last? I am planning to use them mostly while working at a desk or computer when I am not wanting to be totally enveloped by the music, but still have it be accurate. They are very comfortable to wear and the...

Hello. I don't know if this would help, but I got the HFI-450 a few weeks ago had have burned them in ~150 hours (pink noise + generally listening to music when not running pink noise) and I love the sound of it. I'm not an audiophile so I can't accurately describe the sound using all the...

Hi guys, Long time lurker, but never posted. I just bought these 2 days ago too and love it. I been using my Sennheiser PX100 & my dad's Koss KSC35 for a couple years now and finally decided to get a closed headphone for work to reasonably block out office noise. I really liked the sound...