Can I get hi-fi sound from streaming services like Apple Music and Spotify?

Not from Spotify, but with Apple’s new Lossless services, yes you can!

Apple has finally released Apple Lossless, with at least CD quality uncompressed, lossless files, some offerred at up to 24 bit / 192kHz. You’ll need wifi and/or a hard-wired connection to access the high-resolution files, a streamer or computer/DAC combo will work well. BlueTooth won’t pass these high-resolution files due to the bandwidth limits.

Tidal High Resolution also offers true high fidelity, though it’s a bit more expensive. The standard 256kbps files you’ll find from providers like Spotify are not hi-fi. On a really good system, their limitations are obvious, sounding thin, lifeless and grainy.