Noise or Hissing from Analog Output (AUX / RCA)

This guide helps you resolve noise, humming, buzzing, or hissing when using the analog output (AUX / RCA) on your Arylic device.

Common Symptoms

- Background hiss even when music is paused

- Buzzing or humming noise (especially at low volume)

- Noise increases when touching cables or devices

- One channel is noisier than the other

Step 1: Check the Analog Cable Quality

1. Use a shielded stereo audio cable (TRS for 3.5mm, dual RCA for RCA output).

2. Avoid very long analog cables whenever possible.

3. Replace the cable to rule out poor shielding or internal damage.

Low-quality or damaged cables are the most common cause of analog noise.

Step 2: Check Power Supply and Grounding

1. Make sure the Arylic device and amplifier are powered from the same power strip.

2. Avoid using ungrounded or low-quality power adapters.

3. Unplug nearby power supplies, chargers, or LED drivers to test for interference.

Ground loops or power noise can introduce hum or buzzing in analog signals.

Step 3: Adjust Volume and Gain Structure

1. Set the Arylic device volume to 70–90%.

2. Use the amplifier or active speaker to control final listening volume.

3. Avoid maxing out both the device and amplifier volume at the same time.

Incorrect gain staging can amplify background noise.

Step 4: Isolate External Interference

1. Move analog cables away from power cords and power adapters.

2. Keep the device away from Wi-Fi routers, Bluetooth transmitters, or large transformers.

3. Disable unused audio inputs on the amplifier if possible.

Analog signals are sensitive to electromagnetic interference.

Step 5: Check Output Mode and Source

1. Test with a different audio source (Wi-Fi streaming, Bluetooth, line-in).

2. Pause playback to confirm whether the noise exists without audio.

If noise remains when paused, it is likely hardware, cable, or power related.

Step 6: Test with Another Amplifier or Speaker

1. Connect the analog output to another amplifier or active speaker.

2. Test the original amplifier using another audio source.

3. Compare results to isolate the noise source.

This helps determine whether the issue comes from the Arylic device or downstream equipment.

Notes

- Analog outputs naturally have a small noise floor, especially on high-gain amplifiers.

- Very sensitive speakers may reveal low-level hiss that is normally inaudible.

- Digital outputs (Optical / COAX) are immune to analog noise.

Troubleshooting Tips

1. Power off all devices and unplug for 30 seconds before reconnecting.

2. Update the Arylic firmware if available.

3. Avoid using audio adapters designed for microphones or mobile headsets.

4. If noise persists, contact Arylic support with your device model, cable type, and power setup.