You can pretty much spend what you like on a music-streaming stereo amplifier these day, of course - but those with more sense than money needn't look any further than the remarkable WiiM Amp Pro. A modest outlay buys very agreeable sound quality, comprehensive network streaming smarts, multiroom audio possibilities, and a control app that's an object lesson in stability and basic common sense. At some point WiiM is going to launch a product that doesn't absolutely demand your attention - but this is not it.
