I love the Hifiman sound and my HE400i's are close to my favorite headphone, but I would respectfully disagree that this is the sound the op is asking for. Granted the HE 500/560 is more detailed than the 400 series, I'm still not sure they fit the bill. I would think the Beyerdynamic T90 would be closer to the sound signature the op is looking for. Highly detailed, crystal clear, but not too bright highs. Tight, accurate bass, slightly lean midrange. And the price is in line used, as well as the Audio gd headphone amp being powerful enough to drive them. Of course I could be completely wrong, but this is my impression of what was asked for.