PrimaLuna Preamp Upgrade Question


I have owned a PL Evo400 Integrated for the past few months. I love the amp, but am considering diving deeper into separates. I've been eyeing a Primaluna Evo Preamp to hopefully unlock more separation and presence.

I'm curious if anyone has any experience with owning a Primaluna Integrated and then adding a Primaluna Pre Amp using the HT bypass. I understand this is a possibility, but I'm curious of the added benefits and or drawbacks. Is there is a general consensus it would be greatly beneficial, I would eventually sell off the Evo 400 integrated and go full separates. 

If you don't have specific experience with PrimaLuna but have been in a similar situation using a bypass in an integrated I'd also love to hear some feedback. 


128x128j-wall
https://photos.app.goo.gl/uLsEz21iN238APXE9

@stereo5 
@tablejockey 

Am I operating too close to a wall? I figured 3 feet was appropriate for being 9 feet away from speakers. 
And here is the setup. I would appreciate any and all feedback. The more I can learn the more I'd love to pass on. 

https://photos.app.goo.gl/XhLEwkzaxHqmj7Qc7
If you like to listen to all genres and sometimes crank it, sell the integrated, buy the preamp, and get a hybrid tube/SS amp like the Rogue Dragon that has high input impedence and damping factor, and big watts, then listen as your Focals suddenly become everything they can be. Room treatment like bass traps would be necessary though too. You can thank me later.
J-wall, you mentioned the GL KT-88 and Mullard 12Au7 combo earlier in this thread.  After auditioning several tubes in my EVO 400, I am happy to report that the aforementioned combo is absolutely killer.  To my ears, in my system of course.  Strongly recommend.
J-wall, if I measure to the face of the foot like your photo, I’m at 3’-3".
From what I see your setup is good.