My setups are pretty cheap as I did not want to put much money in it.
As for DACs, I have a €24 Hifiberry DAC+ and an inexpensive raspberry compatible DAC out of Aliexpress (around €12) on my two different setups (kitchen and living room).
Both work well and deliver good enough signal (I am not by anyway an "audiophile") I prefer the no-brand one from AE though as it has an IR receiver I am using to control media playing.
As for amplifiers, any stereo amplifier would work, so I choose a Lepai lp-2020a (€30 on amazon) in the kitchen. I have an old Marantz branded amplifier for the living room.