As amps from Japan like the AT-HA5000, Leben, etc. are all 100 volt amps, are North American owners using step-down transformers/converters with their amps?
I can't answer that, as I don't have anything to compare my setup with until the HA5000 comes in, and I haven't heard the W1000X on any other equipment.
I have ordered both the ATH-W3000ANV and the AT-HA5000ANV (plus a 100W step down converter). I have the ATH-W1000X already, so I am hoping for good synergy with the HA5000 for those too.
I will be using my RWA...
I agree with Zombie_X's comments. The HD 600s also have more forward mids.
Based on your Grados comment, you should like the HD 600 better than the HD 650 - by a considerable margin.
You should be able to buy the HD 650 for around $325 new, if you decide to go that route. Satellite_6 may have a good point. It boils down to personal preference, but the HD650, while more laid back, definitely has more...
If you are patient, you should be able to pick up the HD 600 new for $300 or less.
I was looking for a more neutral headphone than my HD 650s for classical music, and I bought the HD 600s a few weeks ago and am really...