One of my favourite amps. So configurable and very powerful. It works well with both the HD600 and 650 as well.
I'm kind of torn between the HD600 and HD650 actually. I'm listening at the moment on a 650 and the bass is really very good. Sometimes, I want a bit less so I use the HD600 and then I start to carve a little more bass so I go back. Then at other times, I just want an entertaining thump and tizz sound so I use the Beyer DT990.
I was considering the price difference between the HD600 and HD650. If you haven't heard a 650, then you wouldn't miss it, but if you hear a 650, you may well want to spend the extra. I'm not sure it's worth it though - my wife can't tell them apart so it's quite subtle.
The 600 has a very even frequency response where the HD650 has a raised bass.
Is the LCD around the same kind of price? You could always trade with someone if you don't like it.