Does anyone have any experience with the adapters and the EF 86 tube rolling?
Perhaps the question of the adequacy of the HD800 has to do with the tubes used? The EF 86 might help?
Who had the HD 650/600 and HE500 can tell me whether it is better to go directly to the HIFIMAN (for those who have the money) and then forget Senheisers? Thanks.