How to hook up a preamp to a Integrated amp

I rolled NOS Amperex 7308's into my Statement's pre-amp section with huge results from the stock 6922's.

The Statement's pre-amp section is quite good; and I've heard from Wally that John Tucker does not like to modify the Statement into the Statement Plus model (the $5K pre-amp upgrade). Still, I'd never thought of running a separate pre- into my LSA.

Is the SimAudio P5 that much of an upgrade?

Dekay - simao , Thanks for taking the time to post on my inquiry . 
The LSA  is used . I traded for it . 
Before the trade i had bought the Simaudio p5 preamp and it arrived after the trade .I have a few amps i tried the p5 on and wanted to hear it with the LSA once i read the Positive Feedback article 
The Moon p5 / LSA combo sounds great with only 40% of my music . Just so so with the rest . 
I installed a pair of Siemens tubes in the LSA which sound much better to me than the EH that were installed .
LSA is a fine integrated .

@maplegrovemusic That it is. I'm on the lookout for a specific Triode Corporation integrated to perhaps replace it only because Robert Lee at Acoustic Zen raved about the synergy between my Adagios and Triode Corp. gear.