Integrated Amplifier balanced


I need some help in buying a Solid-state integrated amp. All my music is coming from a DAC (Slim Devices Transporter). The requirements are:

0. The best possible music within my budget (I listen to classical and vocal music).
1. Must support balanced inputs.
2. Dual voltage (110/220).
3. Under $3,000 used or new.
4. Solid build.

Bonus
1. Headphone output.

Greatly appreciate any advice.
audiophile_new
How many pairs of balanced input? What else is in the chain (dac, speakers, etc)? There are a lot of options so this will help narrow it down a little.
All my music is on my computer (FLAC). I am looking at the Slim Transporter as my DAC. This is my entire chain! I need to get an amp and speakers.

I need one pair of balanced inputs. If the amp has a pre-amp balanced out, I might hook-up a headphone amp (Headroom) unless the amp supports headphone output.

Thanks for your help.