Integrated Amp Suggestions

The Krell k-300i “only” puts put 150Wpc into 8 Ohms but doubles to 300Wpc into 4 Ohms.  I don’t know what speakers you might be planning on buying in the future, but I’d think this would more than adequately power just about anything. 

But, if you must go nuclear the Plinius Hiato puts out 300Wpc into 8 Ohms and 450 into 4 Ohms.  Best of luck. 

If you like the Rotel 1592mk2, then check out the Michi X3 and if you must the X5 (which is just overkill).  I have both the Rotel and the Michi and love both.  The Michi is neutral and a more refined 1592.  Better detail, more air, bigger sound stage and a lot more dynamic.  It's a real steal at it's MSRP of $5300 and easily competes with amps in the 7k-8k price range.  

CODA CSiB is awesome and so is Gryphon 120. 

@travisg 

100 wpc is plenty of power for any future upgrades. Typically you use about 10wpc

It's amazing how many people don't understand that. With high efficiency speakers, those "flea watt" amps get plenty loud on 5 wpc or even less.

The Creek Destiny has the A/B speakers.  I require this also as I use one system to feed either the speakers on my office desk or out in the shop.  I bought an expensive Luxman integrated that also does A/B. speakers and was very unimpressed with the sound.  It ran hot as hell and didn't sound any better than the Creek to my ear in this system.  I tried the Luxman for a little while in my main system and I thought it was grainy and unappealing compared to my tubes.  Creek Destiny runs cool and sounds amazing for around 1000 used if you can find one.