This little amplifier has some amazing reviews online.
Whathifi rated this the best amplifier up to about AUD$1000 in 2013.
https://www.whathifi.com/nad/d-3020/review
The features are quite comprehensive for this little amplifier. It has an internal DAC, an aptX-capable Bluetooth connection, USB, coaxial and twin optical inputs. It also has 2 analogue inputs among other things. It also has a subwoofer output. I think it would make an awesome minimalist setup.
I have not read a single review that doesn't rave about this little 30W amp and cannot see it available for anything lower than around $600.
Hope it's useful to some of you.
Inb4 '$400 for a little box? My apple ear phones work just fine'
But seriously, this is a great unit. Used it at my friends house and work be a terrific pick if you're new to the market.