Metal, Poulin Le456 + Nebula Test

i cannot say much since i am in office in old headphones, but first impression is that the clip has very warm/saturated sound. however the other clip with C15 has digital sound.
 
i cannot say much since i am in office in old headphones, but first impression is that the clip has very warm/saturated sound. however the other clip with C15 has digital sound.

The C15 clip is not processed at all so it may be harsh at certain frequency