CLEF-Premium Pre-tuned adopts the ceramic body to prevent the resonance excellent rigidity， by further equipped with a 6.0mm front mount driver of new development， is the inner-ear headphones to achieve a rich sound field expressive power. Play bass in delicate and mellow Vocal tune， and we have line up the two models subjected to sound tuning of Megabass tune the low-pass plus with profound feeling.

• Pre-tuned the sound quality design 
  by the difference of the driver internal structure and the materials used， to achieve the sound tuning that different with the same body appearance and TH-PVEC600WH. In this mega-based tuning model， and has realized the deep bass playback of force by enhancing the performance of the low frequency range.

• Adopted the ceramic material 
  is adopted the ceramic material that was firing process the aluminum oxide in the body. By the resonance frequency optimization and high rigidity， it supports high-quality sound reproduction.
• Net covering code + special structure L-type plug 
  on the surface of the code， I've adopted a net covering material which is excellent in protection of the code core material there is a sense of quality. Furthermore 3.5mm diameter L-shaped plug part of the special structure to reduce the bending load， and less likely to break in the vicinity of the plug.

• Front mount driver 
  is equipped with a 6.0mm diameter high performance small screwdriver of new development. Compared with the general headphone， for vibrating the sound closer to the eardrum， it is possible to suppress the attenuation of the medium-low range in particular， and delivers a rich sound.