Does the Denon DNP-2000NE have a built-in amplifier?

No. It is a streamer and DAC only, so you need an integrated amp, powered speakers or a receiver to drive speakers. It does have a headphone jack and analog RCA outputs.

Can it play DSD and high-res FLAC files?

Yes. It handles PCM up to 32-bit/384 kHz and DSD, along with FLAC, ALAC, WAV, AIFF, MP3, WMA and AAC. You can play files from a USB drive or over the network.

Does it support AirPlay 2 and Spotify Connect?

Yes, both are built in, along with Bluetooth and internet radio. Tidal and Qobuz play through the HEOS app rather than native Connect.

Can I use it in a multiroom setup?

Yes. It works with other HEOS devices, so you can group it with HEOS speakers or components in other rooms through the HEOS app.

What outputs does it have?

It has optical and coaxial digital outputs, RCA stereo analog outputs and a 3.5 mm headphone jack. There is also an HDMI output.

Is it worth it over the older DNP-800NE?

The DNP-2000NE adds a better DAC, a headphone amp and a more solid chassis, and it handles higher-resolution files. If you only stream CD-quality, the older model covers the basics.