Rogue amps-- try 5751 instead of 12ax7

On my side, I've received one week ago a pair of GE 5751 1960's (grey plate, triple mica, 5 stars). I placed them in my Cronus instead of the 12AX7 and they are wonderful. Surprisingly, it adds an improvement on bass. Plus, voices are beautifully separated when there are back vocals. All in all, these tubes are very musical and I don't hear any of the bad things that some say about NOS tubes.

Another thing, on the suggestion of Mark O'Brien at Rogue, I replaced the EL34 by KT77's Genalex Gold Lion reedition. Just a big WOW !

Enjoy your sound,

SÉbastien

Use NOS Tungsol 5751s in my Cronus Magnum

Sebastien, take this for what it's worth as I am not partial to EL34s,I recently swapped GL KT88s out of my Ayon Spirit for Shuguang Black Treasures - to my ears they take the music up a few notches, more detail & dynamic -prior to these I found the GLs the best KT88s I used. There's a Black Treasure version of the EL34 , haven't heard it, but if it is as good as their KT88 it might be something to keep in mind at some point if you're interested

The 5751 is a well-known sub for the 12AX7 that works in MOST circuits. My experience is that the 3 mica black plate versions are the best of the bunch. My favorites are the early RCAs and GEs that have silver clips (looks kind of like braces) on the ends of the plates. Highly recommended!

I have used both RCA and sylvania 5751's in my Rogue M-180 with Golden Lion KT-88 reissues for several years to good effect. The GL KT-88 are getting a little long in the tooth, i might have to try the Shuguang Black Treasures,

I am going to try kt 120s on my rogue m180s next, I have gold lion 12au7s and 12ax7s on the way from rogue , should have them in a couple of weeks, but I was interested in the kt77s, what do they sound like? has anyone compared kt77s vrs kt120s? thanks, Chris