Guide
Plenty of excellent stereo systems still lack one modern feature: streaming. The fix is usually simple and does not mean replacing your amplifier or speakers. This guide explains the boxes involved, how to connect them and how to choose between the many options.
The building blocks
| Device | What it does | When you need it |
|---|---|---|
| Network streamer | Plays music from streaming services and your network | Always, unless your amplifier has streaming built in |
| DAC | Converts digital audio to analog | When the streamer has no DAC, or you want a better one |
| Streaming amplifier | Streamer, DAC and amplifier in one box | For simple systems with passive speakers |
| Music server or storage | Holds your own files (for example ripped CDs) | If you have a local music library |
Option 1: a streamer with a built-in DAC (easiest)
Connect the streamer's analog outputs (RCA) to a spare line input on your amplifier, such as AUX or CD. This works with almost any amplifier, including vintage receivers. Affordable streamers from WiiM and Bluesound, and models from Cambridge Audio and Eversolo, take this approach. Do not use the amplifier's phono input; it expects the much smaller signal from a turntable cartridge.
Option 2: a streamer plus a separate DAC
If you already own a DAC, or your amplifier has one built in, use a streamer's digital output (coaxial, optical or USB) instead. This lets you upgrade the conversion separately. DACs range from inexpensive, well-measuring units by Topping and SMSL to designs from Benchmark, iFi and Denafrips. Higher-end network players and servers from Lumin, Aurender, Innuos and SOtM focus on the streaming side and library management.
Option 3: a streaming amplifier
If you are starting fresh or simplifying, a streaming amplifier combines everything; you add passive speakers. Many include HDMI ARC for a TV and a subwoofer output. The trade-off is that upgrading one part means replacing the whole unit.
Choosing services and software
- Streaming services: check that the streamer supports the services you use directly in its app. Lossless and hi-res services include Qobuz, Tidal, Apple Music (via AirPlay at reduced resolution on most streamers) and Amazon Music. Downloads are available from stores such as HDtracks.
- Casting: Spotify Connect, Tidal Connect, AirPlay and Chromecast let you control playback from the service's own app.
- Library software: Roon offers rich metadata and multi-room control for larger collections; Audirvana is a computer-based alternative.
- DIY: a Raspberry Pi with a HiFiBerry board running Volumio makes a capable, inexpensive streamer.
Setup tips and common problems
- Network: use Ethernet if it is easy; otherwise make sure Wi-Fi is strong where the streamer sits.
- Volume: if your amplifier has a volume control, set the streamer to fixed (line) output, or at least to near maximum, to avoid adding noise or losing resolution with digital volume.
- Hum: a hum after connecting a streamer is often a ground loop, frequently through a TV or cable box connection. Try powering items from the same outlet strip, or use an optical digital connection, which isolates the grounds.
- File formats: FLAC and ALAC are lossless; most streamers play both. Very high sample rates rarely bring audible gains, so do not choose hardware on maximum sample rate alone.
- Updates: streamers depend on software, so pick a brand with a track record of firmware updates and long-term app support.
For related reading, see headphone amp and DAC makers, how to match an amplifier to speakers and active vs passive speakers.
Frequently asked questions
What is the difference between a streamer and a DAC?
A network streamer fetches music from the internet or your home network and outputs it as digital audio. A DAC (digital-to-analog converter) turns that digital signal into the analog signal your amplifier needs. Many streamers have a DAC built in, and many amplifiers have a DAC built in, so you may only need one box.
Can I add streaming to an old amplifier?
Yes. Any amplifier with a spare line-level input (often labeled AUX, CD or Tuner) can take the analog output of a streamer with a built-in DAC. If the amplifier has a digital input, you can use the streamer's digital output instead and let the amplifier convert it.
Is wired Ethernet better than Wi-Fi for streaming?
Ethernet is more reliable, especially for high-resolution files or busy home networks, but it does not make the music sound different when Wi-Fi is working properly. Use Ethernet where it is easy; otherwise good Wi-Fi coverage near the streamer is fine.
Do I need Roon to stream music?
No. Most streamers have their own free app and support services such as Qobuz, Tidal and Spotify directly, plus AirPlay or Chromecast. Roon is a paid music-management system that adds a rich library interface and multi-room control, which some listeners value for large collections.
Is Bluetooth good enough for hi-fi?
Bluetooth is convenient but compresses the audio and depends on the codec both devices support. For casual listening it can be fine, but a network streamer that plays music directly from the service gives better and more stable quality.
Resources mentioned in this guide
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