This was a GREAT description of the Hifi 400i. You have an excellent way to communicate your opinion and experiences. Funny, when I bought these headphones one of my two other choices was in fact the Senn. HD 650. The other was an Alpha Mad Dog and I know that to my musical taste and listening...

Absolutely, I have this headphone for 1 month. Normally I have all music stored in an iMac Apple Computer, headphone is connected to a Meridian Explorer desktop DAC/AMP. Nevertheless when I go portable it goes with my iPhone and the volume is fine. For the record, these headphones rate excellent...

Dear Matt TCG I'm new to this and your review on the HE-400i is very helpful. I am wondering if you can help me further? Being new to headphones is odd because I am a true audiophile and have been for over 40 years. I have had this opinion / believe that headphones are like 3-D glasses or hats...