Tube Rolling a Rogue Cronus Titan integrated amp


Hi this is my first post so please forgive any mistakes made thanks in advance.
I own a Cronus Titan integrated (Non Magnum version). I purchased this off E bay in the UK  where I live and to be honest it was a nightmare needless to say I had the Amp repaired by an extremely good Electronics engineer so didn't lose out too much financially.
The Amp was finally as it should have been :-)  and I have lived happily with it for the past 2 years, however( as always) the need to tinker has bitten me again so having read a few posts regarding said amp I have ordered a Matched Quad set of Gold Lion KT66's 

Now for the important bit 
I'm not technically minded especially with electrics what if any thing would I need to change on the amp to accommodate the valves as in biasing is usually set @ 35 on the meter( if that makes sense)

Sorry for the long-winded post and thanks for having me 
johnnylambo
  Talk with Rogue
they have fantastic customer support
the front end tube will make the most difference as @twoleftears. Has aptly pointed out 

also try listening to different output taps, that can make a dramatic difference and is free!!!
Hi all, 
E-mailed Mark @ Rogue and he's categorically stated that KT66's shouldn't be used

"  I would definitely not use the KT66 as the plate voltage is too high for that tube."

Which is a bummer saying as I had already ordered them so have to try and exchange them for Gold Lion KT77's and a Telefunken pre amp tube on his recommendation.

And yes  they are second to none in the customer support role as well as their products.
Have fun everyone :-)
If you want warmer, a little more "tubey" sound (the Rogue standard isn't very much) try a Mullard NOS in the preamp socket.