Many experienced tubophile listeners prefer tube rectification. I've never done adirect comparison. In order to do so you'd have to have identical amps (or the same one modified). I have done comparisons with replacing cheap ss rectification with HEXFREDs and the difference is not subtle for not alot of $.
what does a Rectifier tube do?
I have an Air Tight Atm1 amp which uses 2 5ar4 Rectifier tubes. The manufacturer calls it Mullard Rectification. My question is what is Rectification? I ask becuase AirTight makes ATM3s which use the same tubes (EL34) but do not use 5ar4s for Rectification. Would that mean there is a different sound even though both amps use the same Output tube?