For sale: Audio-Technica ATH-AD1000 headphones. 2008, Japan. For monitoring or demanding audiophiles. For critical and analytical music listening. Preferably with a good stationary setup. Comparable to Sennheiser HD650. Outperforms ATH AD700X and, say, Beyerdynamic 770 pro 250. Sennheiser 600, in my opinion, also lag behind. Fast headphones, handle material of any complexity.