Match the streamer’s output to an input on the amplifier: connect analog RCA outputs to a line input, or connect optical/coaxial digital output to the corresponding digital input. An analog connection uses the streamer’s DAC; a digital connection sends the signal to the amplifier or receiver for conversion. Before choosing a cable, check both rear panels and confirm each port’s direction and signal type.
Choose a connection that both components support
Look at the streamer’s outputs and the amplifier’s inputs. Match the connector and the signal type, not just the shape of the plug. For model-specific port and setup details, consult the Denon HEOS Link HS2 documentation, Eversolo manuals, and Wattson Audio Madison product information. Their examples describe particular products; available ports and behavior vary by model.
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| Connection | Streamer port to amplifier port | Where conversion happens |
|---|---|---|
| Analog RCA | Left/right RCA output to analog line input | Streamer DAC |
| Optical digital | Optical/TOSLINK output to optical input | Amplifier, receiver, or connected DAC |
| Coaxial digital | Coaxial digital output to coaxial digital input | Amplifier, receiver, or connected DAC |
Use a digital connection only when both devices have compatible ports. Check their manuals for supported audio formats and sample rates; one model’s limits do not establish what another can accept.
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Use this route when the streamer has a pair of analog outputs and the amplifier has a line-level input. The streamer converts the digital stream to analog before sending it to the amplifier.
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- Turn the amplifier’s volume down. Connect the streamer’s left and right RCA outputs to a line input such as AUX, CD, or LINE.
- Do not connect to PHONO unless the amplifier manual explicitly allows it. A phono input is designed for a different signal level and equalization than a standard line input.
- Select the same input on the amplifier. If the streamer requires an output-mode setting, choose its analog output.
- Start playback at low volume and raise it gradually.
Check whether the streamer’s analog output is fixed or variable. With a fixed output, adjust listening level on the amplifier. A variable or preamp output may let the streamer control level; its operation is model-specific, so verify the manual before setting volume.
Connect an optical digital output
If the streamer has an optical/TOSLINK output and the amplifier or receiver has an optical input, connect them and select that input. The digital signal is converted by the receiving device’s DAC. Confirm that the streamer port says OUT and the amplifier port says IN; a device can have both directions.
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Connect a coaxial digital output
Use a coaxial digital output on the streamer and a coaxial digital input on the amplifier or receiver. Select that input; conversion then happens in the receiving device’s DAC. Coaxial digital audio may use an RCA-style connector, but it is not the same signal as analog RCA. Follow the labels rather than identifying the connection by plug appearance, and check both manuals for format compatibility.
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If the streamer has a digital output but the amplifier accepts only analog line input, an external DAC can bridge the connection: run a compatible digital output from the streamer to the DAC, then connect the DAC’s analog output to the amplifier’s line input. Before buying one, confirm the DAC accepts the streamer’s output format and that its output level suits the amplifier. An external DAC is only necessary when the existing components cannot connect in another compatible way.
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Check volume control with a power amplifier
An integrated amplifier generally combines input selection and volume control with power amplification. A standalone power amplifier may have neither input selection nor a volume control. In that case, the system needs a suitable preamplifier or a streamer with a compatible variable-level preamp output. Check the output mode and input requirements in both manuals before connecting directly; compatibility is not guaranteed for every streamer and power-amplifier pairing.
Troubleshoot a silent connection
- Check that the cable runs from an output on the streamer to an input on the amplifier or DAC.
- Confirm the amplifier is set to the input used by the cable.
- For digital audio, check whether the streamer requires selecting optical, coaxial, or SPDIF output.
- For analog audio, confirm the amplifier is set to a line input rather than an incompatible input type.
- Check mute, playback status, cable seating, and the supported format if using a digital connection.
- Keep the volume low while testing, and verify whether the streamer’s output is fixed or variable.
Menu names and output-selection steps differ by model. Follow the device manual rather than assuming another streamer’s settings apply.
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What to check before buying a cable
- Confirm the exact output and input ports on both devices, including their direction.
- For analog, check for a left/right RCA output and a line-level amplifier input.
- For digital, make sure both components have the same type of digital connection and support compatible formats.
- Check the required cable length and whether a suitable cable is already included.
No connection type is established as universally better sounding. The practical choice depends on matching ports, where you want digital-to-analog conversion to happen, supported formats, and how the system controls volume.
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