Looking for an integrated amp around 4000 to 5000.

I didn't read the entire thread, perhaps someone else has suggested this.  Consider replacing your source instead of the Rogue.  I have owned a number of DACs and the W4S DAC 2 ranks last out of them all.

You'll never know without trying, but my belief is that you'll get a lot more bang for your buck in terms of sound quality if you replace the DAC instead of the Rogue.  A MHDT Labs Orchid would be a big improvement over your DAC2 and set you back about $1200.  Almost anything would be better than that DAC. 

You're probably going to make a somewhat lateral move and the DAC2 is still going to be holding your system back.  But what do I know?  Your system, your money.

There are some other r2r NOS DACS worth taking a look at in that price range. I found the DAC2 to be kind of bright and brittle and mechanical sounding. Another option might be to have W4S upgrade the DAC2. I haven't heard their higher end DACs.