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
Poseschi. The Mullard tube is very good. In my system, the Create was better. I heard none of the bad things you heard. It is possible that the Mullard sweetness has better synergy with the rest of your system or is more to your taste, but the relatively poor performance with respect to spacial clues tells me it is a bad tube. If it were me, I'd ask for a replacement. If you don't like the replacement, I guess you have your answer. I had heard that Create had problems with a batch of these tubes a while back, so it does happen.
To me the create is much more open, faster, and more dynamic. The Mullard slows things down.
I let the create tube burn in for 3 days per distributor/seller. It sounds better. Midrange glare is gone. Some upper treble hardness that reminds me i am listening to a digital facsimile is still present. While it has more apparent spatial and micro resolution it isnt as analogue sounding as my mullard. Worth the money and worth keeping? Most definitley. A different flavor compared to Mullard. Cheers.
I ordered a Create 5AR4 for my Modwright tube Oppo 83 to replace a vintage Mullard. One tube costs $90 shipped. We'll see how it sounds......
If you are looking for more detail, deeper/wider soundstage, much lower floor noise, sharper images and flat out overall better sound? Try the new Synergistic fuses, my Supreme Hi-Fi fuses doesn't come close to the level of performance these things bring right out of the box.

It's like switching from the Mullard 5AR4 to the Create, and could be even more dramatic. 30 days to try for yourself and they are not going back...