Never tried it. I don't like edge terminated capsules. I have ultra-high sensitivity at 10-20k and capsules that don't roll off here are really unpleasant to me. I can't even stand the C12. All I hear is super loud leaf-rustling-like noises on basically all edge terminated capsules. I have to LPF them just to use them. I think I mentioned this over DM.What do you think of the CTS-4?