Well they do sound like precise, fast, very detailed and refined upper echelon stat They are real hi-end headphones in many ways better then SR-Lambda series, but some things that are bad are even more annoying because of this. Soundstage and tone was their weak point if you ask me. I was listening to ECR500 and TK33 last night and these 30 year old trets destroy something like Jade when it comes to soundstage. Hell ECR500 can even compete with O2, Lambda and Sigma when it comes to soundstage, details are lucking but imaging and tone are exceptional.