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.