Crisp sounding tubes for Modwright 5400ES


I recently upgraded from a Modwright 9100ES to a Modwright 5400ES. While there were improvements, the richer mid-range and more powerful bottom end of the 5400ES tipped my previously balanced sounding system into one sounding a bit overly polite with a lack if crispness in the top end.
Can anyone advise me on what tubes (output & rectifier) and power cables to chose so as to brighten the top-end.
Grateful for your advise.
solentgreen
Podeschi,you are hearing something much different than what I heard. I got my Create tube last winter and put it into play while it was still cold from being in the mail box. It was really good from the start. It could be you got a bad tube.
My tube did not change significantly with burn in.
Podeschi, my tube also was good from the get go. I am using the Oppo 95, but using the same tube.
Ok I will chime in on this one. I just replaced my RCA (Mullard) with the Create tube. It sounds about the same as the Mullard, not worse, so I need to let it break in before I can really decide if it's that much different.
I either have a bad tube or my ears are telling me Mullard is better. Or Create isnt broken in.