Integrated amp upgrade


I'm using a Classé Audio CAP-151 to drive my Thiel CS 3.7s at the moment.
I'm not sure if i should upgrade, anyway if i do so i'm looking for a used integrated amp in the $2K to $3K price range with balanced inputs.
I've seen a Sugden IA4 for $3K and a Musical Fidelity KW 550 for $2,4K but it's not balanced.
If i upgrade it would have to be really worth it otherwise i'd rather keep my CAP-151.
I have someone who would like to buy my CAP-151 for $1,6K.

128x128thieliste
As a prior Thiel owner, I recommend a large ss amp with a tube preamp.  I don't think you'll be content in the long run with an integrated, especially with cs3.7.

As mentioned by mani-2, Pass, Krell, Threshold...also CJ, Belles.  Good luck!

Consider an integrated from Wyred4Sound. Built in the USA, has the balanced inputs and sound great. I bought one to drive my current hungry Maggie .7's with great results. Replaced the highly regarded Parasound Halo(nice amp) and to my ears was an improvement...
If you were intent on getting an integrated amp, there's this ModWright which puts out 200 watts into 8 ohms and 400 into 4 ohms. Always a good sign when an amp can double up its power output when its impedance halves:
https://www.audiogon.com/listings/solid-state-modwright-kwi-200-integrated-2017-01-26-integrateds-98...