@antigrunge2 I have a MUTEC Ref 10 on the EtherRegen and SOtM switches.
@russellrcncom I haven't seen that review, the ENO filter is beneficial in terms of relaxing the presentation and reducing noise (better detail and blackness). It was better than a SOtM Cat7 but not better than the Cat7u in my system.
I am hoping to see an explanation how it can change the key!