I have owned the HD 600 which are one step below the updated HD650 and the HD800 I can tell you that the HD800 is one of the finest pieces of audio I have ever owned. An important note about these headphones, they are a difficult load to drive. Playing them through a less then stellar headphone amplifier may be a disappointment and definitely not a fair evaluation of these headphones. After doing extensive research, prior to purchasing the HD800's I purchased a Cayin Ha-1a Tube headphone amplifier and the experience is so awesome it is difficult to describe. I can tell you the sound is smooth as silk, nidrange is 5th row center,and the bass is rock solid rich and full not exaggerated. You will hear many albums for the first time! Pair the 650 or save your money and go with the 600's and invest in a good headphone amplifier
Sennheiser hd 650 vs hd700
Does anyone have a strongly held view on whether the 700 is worth 2x the 650? I will be using computer source thru a rega dac and rega ear. I know it is not twice as good, but given my tendency to buy things 20 per cent different. My plan b if I don't get the 700 is to get the 650 and wait on a deal for beyerdynamic t1s. Thanks.