"The MXH-600S (Dual Dynamic Driver) headphones give a deep sound with a strong bass, thanks to dual dynamic drivers…
The flat, linguine-like cable apparently reduces tangling, which can only be a help when pulling them in and out of bags and pockets when travelling."
Evening Standard, Oct 2013
"The MXH-DD600 (Dual Dynamic Driver) features dual dynamic drivers, while the MXH-DBA700 boasts a hybrid design that pairs a balanced armature with a dynamic driver. Both designs have a rigid aluminium resonance of unwanted frequencies"
Hi Fi Choice, Sept 2013