Low Volume Speakers to pair with Gato 150

I recently moved back into my home and into a new audio set up throughout my house.  After shifting my equipment around and settling in most places, I am left with an unassigned GATO 150 amp and my main bedroom to set up, but no speakers.  I am hoping for some speaker recommendations that would pair well with this amp.  While this is a really nice amp, long story short, this is a 2nd/3rd system in my house, so trying to keep my speaker budget for this room in the $1k ballpark so I don't get too carried away.  The room is roughly 16' square, about 250 SF with vaulted ceilings and carpet floor.  Since this is my bedroom, I am looking for something that will play very nicely at low volumes.  Essentially will be playing jazz, folk/rock, acoustic, anything from Radio Paradise mellow mix.  This does not need to be a very resolving system, but much rather looking for that musicality.  I also have a Moon/KEF Reference set up as my main system, so looking for something very different in this room. I have not selected my source yet (probably SONOS port to stream to accomodate whole house music, and some sort of external DAC eventually), but in any case will be all streaming, no vinyl or cds.  Also would the speakers to produce a sound field that is great off-axis. 

Thanks and appreciate any input.