Originally Posted by Glam Bash
I don't have the HE-400, but I can say the TH-600 are more resolving of detail than the maddogs and not by a small margin. The increased bandwidth in bass and treble also make dynamic swings more impressive. I'm burning these in on the Lyr, but I will compare them to my HE-500 on the WA6SE. I bought these to contrast my other phones(mo' bass). They are working well with a wider variety of music than I thought they would.
Sadly, the TH-600 on my main rig (solid state: NFB-27 + SA-31) could not stand a chance against the HE-5LE, except in the treble were they easily are the best I heard, period.
The planars are so much more defined in the mids, sound more open and organic. They are open, not so nice looking but very comfy (Alpha pads) and cheaper. I'm talking about 5LEs and 4s here.
I wish I had a WA7 to bring the mids to a more adequate level but I now sold the TH-600. I had a very short time with them (just bought the HE-6) but the experience was really great! They have a very very enjoyable sound which has a hint of "reference monitor sound" to them that feels great
Highly recommended for those with tube or mid-centric amps!