Want to echo what Zool was saying. I've been using the brown dampers all day and I feel they also are too boomy/muddy. You lose clarity and impact of individual instruments. It's too warm. I have a fairly bright source with the HRT Microstreamer but it's still too warm. The sound reminds me of wood housed IEM's I've used in the past and a bit like Axiom speakers I've used as well. (Wood housed with metal drivers). Low mids are pushed forward and there is too much of a veil on things like vocals or string vibration. Much less depth and separation is what I'm finding. I've been listening to everything from Metal to slow Acoustic folk music and it's not making any genre sound better to me.
I'm using the greys dampers now and prefer them. I like the clarity and separation. Hearing little things like string vibration on the bass does it for me. With the grey dampers I'm drawn into the music. Maybe a placebo effect but I was finding the stock plastic dampers fatiguing (which is why I tried the brown dampers first) however I don't seem to be getting that with the greys. I'll give these a day and see how I like them overall.
On my 535 they are a bit loose for my liking. They sit in ok but would come out a little too easy. Maybe if I use a tiny amount of something like dental wax on the damper shell it can give a bit of a better seal
Edited by Robgo - 5/22/14 at 2:34pm