Streaming
How to Stream Music to an Older Stereo: Streamers, DACs and Bluetooth
An older stereo with good speakers can sound excellent, but it was built for records, tapes, CDs and radio. The good news: you do not need to replace it to stream music. A small box and the right cable can add Spotify, Apple Music, Tidal, internet radio or your own music library to almost any amplifier with a spare input.
This guide explains the three main approaches, what each one is good for, and how to wire it up correctly.
First, check what inputs your stereo has
Look at the back of your amp or receiver. You need one free line-level input. On older gear these are typically labeled AUX, CD, TUNER, TAPE IN or VIDEO. Any of them will do. If you no longer use a tape deck, the TAPE IN or TAPE PLAY input works fine, but remember that the tape monitor switch on the front usually needs to be engaged to hear it.
Do not use the PHONO input. It applies heavy amplification and RIAA equalization designed for a turntable cartridge. A streamer or Bluetooth receiver plugged into PHONO will sound loud, boomy and distorted, and the extreme signal level is not good for your speakers.
Newer amps may also have optical or coaxial digital inputs, meaning they have a DAC built in. If yours does, you can use a streamer's digital output and skip a separate DAC.
The three main approaches
| Bluetooth receiver | Network streamer | DAC alone | |
|---|---|---|---|
| What it does | Receives audio from your phone over Bluetooth | Plays music from the internet or your network on its own | Converts a digital signal to analog |
| Needs a separate source | Your phone, tablet or laptop | No; the app is just a remote | Yes: computer, TV, streamer, CD transport |
| Interruptions from your phone | Yes: calls and notification sounds, depending on settings | No | Depends on source |
| Range | Within Bluetooth range of the phone | Anywhere on your network | Wired |
| Multiroom | Generally no | Often yes, within the same ecosystem | No |
| Best for | Casual listening, guests, simplest setup | Daily music listening, best convenience | Computer audio, upgrading a streamer or TV's sound |
Option 1: A Bluetooth receiver
A Bluetooth audio receiver is a small box that pairs with your phone and outputs analog audio over RCA or 3.5 mm. Some also have an optical output if your amp has a digital input.
What to look for
- RCA outputs, so you can use a standard RCA cable to the amp.
- Codec support. Bluetooth compresses audio. SBC is the universal baseline. AAC is widely used by Apple devices. aptX variants and LDAC are supported by many Android phones. Both ends must support a codec for it to be used, so match the receiver to your phone.
- An external antenna or good range if the stereo sits in a cabinet.
- Auto-reconnect so you do not need to re-pair every time.
Bluetooth is convenient, and for casual listening it is perfectly enjoyable. Its weak points are compression, occasional dropouts, phone notifications cutting in, and the music stopping when you walk out of range with your phone.
Option 2: A network streamer
A network streamer connects to your home Wi-Fi or Ethernet and pulls music directly from streaming services, internet radio or a music library on your network. Your phone becomes a remote control. You can take a call, leave the house or let the phone die, and the music keeps playing.
Things to compare
- Which casting or streaming protocols it supports. Common ones include Spotify Connect, Google Cast (Chromecast built-in), Apple AirPlay, Tidal Connect, and Roon. Pick a streamer that works with the services and phones in your household.
- Outputs. Analog RCA outputs mean it has a built-in DAC and will connect to any amp. Digital-only outputs (optical or coaxial) require an amp with digital inputs or a separate DAC.
- Ethernet port. Wired connections are more reliable if your router is nearby.
- App quality and longevity. The app is how you use the device every day. Read recent owner feedback and check how long the brand tends to support its products.
- Multiroom. If you want music in several rooms, stick within one ecosystem.
Option 3: Where a DAC fits
A DAC (digital-to-analog converter) turns digital audio into the analog signal an older amp needs. Every streamer, phone, CD player and computer contains one. You add a separate DAC when:
- Your streamer has only digital outputs and your amp has only analog inputs.
- You want to play music from a computer over USB.
- You want to route TV sound to the stereo via the TV's optical output.
- You want to improve on the built-in DAC in a streamer or CD player.
Check the DAC's inputs against your sources: USB for computers, optical (TOSLINK) for TVs and many streamers, coaxial for some CD players and streamers. Some DACs also include Bluetooth, which gives you a two-in-one solution.
Hooking it up: step by step
- Turn the amp off or the volume all the way down before connecting anything.
- Connect the device's analog outputs to a free line input with an RCA cable: red to R, white to L. If the device has only a 3.5 mm jack, use a 3.5 mm to RCA cable.
- Power the device with its supplied adapter.
- Set up the app or pair your phone, following the device's instructions.
- Select the input on the amp. Check the tape monitor switch if you used a tape input.
- Set levels sensibly. Many streamers have a variable output volume. A common approach is to set the streamer near its maximum (or fixed output, if offered) and control volume with the amp, which tends to give the best signal-to-noise ratio. If the amp gets very loud at a low knob position, lower the streamer's output a bit.
Troubleshooting
- No sound: check the input selector, tape monitor and that the cable is in the output, not an input.
- Hum or buzz: try a different power outlet or move the power adapter away from the amp; ground-loop issues can occur with some combinations.
- Sound only from one side: reseat the RCA plugs or try another cable.
- Dropouts with Wi-Fi: move the router closer, use Ethernet, or try a different Wi-Fi band.
Keeping the classic system and making it modern
Many people pair a vintage receiver with a modern streamer and are delighted with the result: the warm look and feel of the old gear with the convenience of streaming. If you are shopping for a receiver to pair with a streamer, check out our guides to inspecting used receivers and vintage pitfalls first.
FAQ
Can I add Bluetooth to an old stereo?
Yes. A Bluetooth audio receiver connects to any free line input such as AUX, CD or TUNER using an RCA cable. Avoid the PHONO input.
Is a network streamer better than Bluetooth?
For everyday listening, usually yes. It plays music directly over your network, avoids phone interruptions, and supports higher-quality streams. Bluetooth is simpler and works with any phone.
Do I need a DAC to stream to my old stereo?
Only if your streaming device has digital outputs only. Most Bluetooth receivers and many streamers have analog outputs with a DAC built in.
Which input should I use on a vintage receiver?
Any line-level input such as AUX, CD, TUNER or TAPE IN. If you use a tape input, engage the tape monitor switch. Never use PHONO.
Can I stream TV audio to my stereo?
Often, yes. Use the TV's optical output into a DAC or into an amp with an optical input. Some streamers also accept TV audio over HDMI ARC.
The bottom line
An older stereo can stream as well as anything new. For the simplest setup, a Bluetooth receiver into a spare line input does the job. For the best daily experience, a network streamer with analog outputs is worth the step up. Add a separate DAC only when your source has digital outputs or you want to upgrade the conversion. Just remember: line input, never phono, and control volume at the amp.