Well Rah has adjustable treble and bass filters so its not that straight forward to judge. Their are also DD/planar/piezo tribrid and semi open.@Skullar i sold my Zenith and Aten, i’ve RAH and i’m waiting Halcyon from IMR
Someone said H40 sound very close to RAH
Rah still has edge over h40 in my opinion too.
But h40 fit and slightly more laid back treble and better isolation is just asking to be daily drivers for me with very little compromise.