Amplifier matching with Graham ls 6 speakers

I have purchased a pair of Graham LS 6speakers and I’m looking for a solid-state streaming integrated amplifier to pair with them. My vitals are: 

1. I bought them for their lush mid range and I want an amplifier that will preserve that mid range.

2. My priorities are sound quality and ease of operation. For that reason I want to purchase a streaming integrated amplifier.
3. I would anticipate spending approximately $2000, but would go up to $3000 if it would make a meaningful difference.

4. My preferred music is female vocals, opera, folk music, and beautiful melodies such as from the scores of movie like Out of Africa, cinema Paradiso, gladiator, etc. I don’t care for treble and I don’t need an excessive amount of base as I don’t usually listen to rock.

5. The speakers will be placed in a large living room (14 feet wide by 37 feet long).They will be placed a few feet in from the longer wall and I will be sitting approximately 8 feet away. I don’t care about the sound in the rest of the room.

I would appreciate any suggestions. Thanks.