The Minimalist
The tiny Lepai LP-2020A+ amplifier can be found on Amazon for an amazing $25—less than you’d pay in shipping for other equipment— and provides enough power for modest speakers like the Dayton Audio B652s, available online for $40, among the best speakers available for under $100 per pair. The Lepai is compatible with Bluetooth adapters, preamps for record players, and even CD players.