Audio-Technica AT2035 USB mic produces clicks after power on

Audio‑Technica AT2035 USB mic produces clicks after power on

Introduction

A crisp, clean signal is what you expect when you plug the Audio‑Technica AT2035 into a computer or laptop. Instead, many users report a series of clicks, pops or a short burst of noise each time the mic powers up. This article dives deep into why that happens, how to spot it, and what you can do to silence the clicks for good. Whether you’re recording podcasts, streaming, or simply using your mic for video calls, the steps below will help you troubleshoot and restore clear audio.

The AT2035 USB – What Makes It Tick

The AT2035 is a large‑diaphragm cardioid condenser mic that ships with an integrated USB‑to‑analog converter. Its key components include:

• Mic capsule – captures sound waves.
• Internal pre‑amp – boosts the signal to line level.
• USB interface – handles power delivery and data transfer.
• PCB circuitry – routes power and audio signals.

Because the mic draws all its power from the USB port, any irregularity in that power source can affect the signal quality. A sudden spike or dip in voltage right after the mic powers on can translate into audible clicks.

Symptoms You’ll Notice

• A sharp pop or click that lasts only a few milliseconds.
• The click appears every time you reconnect the mic or turn your computer on.
• The noise is only present when the mic is powered; other USB devices are silent.

If you’re hearing these sounds during live streams or recording sessions, stop recording and let the mic settle for a few seconds before continuing.

Common Causes of Click Noise

1. Power‑Related Issues

The USB port may deliver an uneven voltage surge when the mic is first powered. The AT2035’s pre‑amp can interpret that surge as a signal burst, resulting in a click.

2. Driver or Firmware Mismatch

Out‑of‑date or incompatible drivers can cause the USB controller to misinterpret the mic’s data stream, which may manifest as clicks.

3. Audio Driver Settings

Incorrect sample rate or bit depth settings can create timing mismatches that show up as clicks.

4. Loose or Damaged USB Cable

A frayed cable can introduce intermittent contact that triggers a click each time the mic powers on.

5. Interference from Other Devices

EMI from nearby power supplies, routers, or even the computer’s own GPU can induce clicks, especially when the mic is initializing.

6. Hardware Failure in the Mic

A defective pre‑amp, capacitor, or PCB fault can produce a short burst of noise on power‑on.

Step‑by‑Step Troubleshooting Guide

Below is a systematic approach that covers all the above possibilities. Work through each step in order until the issue is resolved.

1. Verify the USB Cable and Connection

1. Inspect the cable for any visible damage.
2. Reconnect the cable firmly to both the mic and the USB port.
3. Try a different USB cable that is known to work with other devices.
4. Switch to a different USB port on your computer, preferably a port on the back of a desktop or a different front port on a laptop.

If the clicks disappear after swapping the cable or port, you’ve found the culprit.

2. Test on a Different Computer

Connect the mic to another computer or laptop:

• If the clicks no longer occur, the problem is likely with the original computer’s USB controller or drivers.
• If the clicks persist, the mic itself is probably the source.

3. Update Audio Drivers and Firmware

1. Open Device Manager (Windows) or Audio MIDI Setup (macOS).
2. Locate the AT2035 entry under “Sound, video and game controllers.”
3. Right‑click and choose “Update driver” or “Check for updates.”
4. Visit the Audio‑Technica website for any firmware updates specific to the AT2035 USB model.

Reboot after installing updates and test again.

4. Adjust Sample Rate and Bit Depth

In your computer’s audio settings:

• Set the sample rate to 48 kHz (common for recording).
• Choose 16‑bit depth for standard audio.

Avoid mixing sample rates between the mic and the system (e.g., 44.1 kHz mic on a 48 kHz system), as this can produce clicks.

5. Disable Exclusive Mode (Windows)

1. Open Control Panel → Sound.
2. Select the AT2035 and click “Properties.”
3. Go to the “Advanced” tab.
4. Uncheck “Allow applications to take exclusive control of this device.”

Exclusive mode can interfere with the mic’s timing during power‑on.

6. Use a Powered USB Hub

If you suspect the USB port’s power output is unstable, try connecting the mic through a powered USB hub. This can provide a steadier voltage supply.

7. Run a Noise Profile Test

Use a simple recording program (Audacity, GarageBand) to capture a few seconds of audio. Examine the waveform:

• A single spike at the beginning indicates a click.
• Multiple spikes or irregularities point to ongoing interference.

If you see a spike, try the steps above again, focusing on power stability and driver updates.

8. Check for External Interference

• Move any high‑power devices (e.g., microwave, router) away from the mic.
• Keep the mic on a stable surface; avoid placing it on a desk that vibrates.

If the clicks stop after moving the mic or other devices, interference is likely the cause.

9. Inspect Internal Hardware (Advanced Users)

If none of the above steps resolves the issue, you may need to open the mic casing:

• Warning: This voids any warranty and should be performed by a qualified technician.
• Look for burnt components or loose solder connections.
• If you find a defective capacitor or pre‑amp, consider professional repair.

Advanced Diagnostics and Tools

For those comfortable with audio engineering tools, the following can help pinpoint the problem:

• USB Analyzer – captures the USB traffic stream to identify data irregularities.
• Oscilloscope – measures the voltage on the mic’s power line for spikes.
• Spectral Analysis Software – visualizes frequency content; clicks will appear as high‑frequency spikes.

These tools are typically used by manufacturers or audio technicians, but hobbyists with access can also use them.

Preventative Measures

• Use a quality USB cable that meets the mic’s specifications.
• Keep the mic’s firmware up to date by checking the manufacturer’s site quarterly.
• Avoid USB over‑extension by not using long or cheap cables.
• Place the mic on a vibration‑isolated surface to reduce mechanical noise.
• Regularly test the mic with a quick recording session to catch issues early.

Implementing these habits will reduce the likelihood of encountering click noise in the future.

When Professional Help Is Needed

If after all troubleshooting the clicks remain, contact Audio‑Technica support or an authorized service center. Provide them with:

• The exact symptoms and when they occur.
• Steps you’ve already taken.
• Any logs or recordings that demonstrate the issue.

A repair may involve replacing the pre‑amp or PCB, or in extreme cases, the entire unit.

Frequently Asked Questions

Conclusion

A clicking sound on the AT2035 USB after power‑on is usually a sign of a power fluctuation, driver mismatch, or a loose cable. By methodically checking the cable, USB port, drivers, sample rate, and external interference, most users can eliminate the noise without professional help. If the problem persists after following the steps above, the mic may need repair or replacement.

Take a few minutes to troubleshoot, and you’ll be back to capturing clean, crisp audio in no time.