I found the he500 an outstanding hp and great for most music. Ultimately like the lcd2, it was just to dang heavy to be a daily driver. And if I spend that much money, I'd like to be able to wear them all day if I want. For me, either of those hp's were good for about an hour before I was thinking about a break. Dealbreaker for me.
The he4 however feels like a portable compared to those two beast mentioned above. But the bass on the he4 has better weight and punch than the he400. It is people...I must tell the truth. AND it is also better textured than the he500. Again I speak the truth as I'm bound by headfi to do.
Problem is, the he-4, and he-6 ftm, take more amp than most people have to get them into 5th gear. The A2 wont do it. The lyr wont either. emotiva mini with speakers taps will do though. And around the $200 price point which is quite impressive. Plus the cost of the cable of course. Nothing though has enabled the he-4 to come to life like my vintage receivers. Specifically the Pioneer sx-1280. If you EVER get a chance to pick one of these up locally on CL say, anything south of $500 is a steal. These go on ebay for $1k plus.
The only setup that has made my jaw drop more than the he-4/Pioneer 1280 is the Stax on the Blue Hawaii, period.
Once of these days I'll try out the (relatively) elusive HE-4. Does anyone know if this has ever been measured? I can never seem to find a chart anywhere just to satiate my comparison curiosity for the time being. The SX-1280 is a BEAST at 65lbs and 160wpc and it's easily one of the best in vintage receivers out there, especially if you've got some massive towers to drive. I've got a small list of vintage receivers I look for on CL and yard sales my dad has had an SX-850 since the mid-70's that he got when he was around my age so that's the one I'm most keen on (fond memories haha).