not much, but good

Benefits:
- Very balanced great bass, which is also quite deep
- Which are extremely transparent and middle voices etc. sound very well
- Frequencies above 10kHz are represented linearly up to the top
- Is very good, although it is larger than many other

Disadvantages:
- Slight exaggeration 5-8 kHz, as with many earphones with a conventional membrane (but much better as cheaper models)
- Earphones supplied in silver and not in black, as ordered

my conclusion:
who has a player in his EQ, is experiencing a very transparent and detailed listening experience, who the frequencies 5-8 kHz can not be lowered a few db, should consider whether he can live with the flaw and what better buy.

(All My personal impression, no measurements)