What Integrated Amp do You use

Bryston B60R. Amazing little amp. All analog.  

Add a miniDSP 2x4HD and its a full featured package.  EQ, DAC, Remote input switching between the analog source selected on the B60 and the digital inputs.  

Out of production now, but can be found used. 

Gotta try the Canor line , The 2.1 intergraded amp very well made dead quiet tube pre amp .

I have a Simaudio 600i in one system and an Audio Research Vsi55 in another. The ARC is used in my office and helps keep me warm in the winter. All kidding aside, it's a really great sounding integrated and I don't need a lot of power in that space. I currently have my Harbeth Super HL5 Plus in the office and the Vsi55 has no problem driving them when I get the opportunity to turn up the volume. The 600i is very dynamic and detailed and mates up great with my Harbeth P3ESR speakers. It's a nearfield system in my computer room and sounds fantastic.  In the right space, this would make a wonderful main system.  Actually, I enjoy it as much or more as my main system, it's a little more detailed, but warm and easy to listen to.

hegel 590. It brings a smile to my face every time I turn it on and I turn it on every day. 
yes!

besides my sphinx i also use a NAD 316 upstairs with some old dynaco speakers (another technics 1200, a lower end nakamkchi and a little ifi bluetooth receiver as sources). this is the system my wife & kids use every day. i usually have it on for an hour or two myself after work while i do chores, cook dinner etc. very sweet sound, this system is obviously not the last word in resolution or dynamics but the amp, especially, is stupid cheap for what you get, and if i find some sticky fingerprints on it from time to time that's just part of the fun