Sony WH-CH720N: What Changes When You Plug In the Cable?

Product guide October 26, 2026

Sony WH-CH720N in Black, model WHCH720N/B.

The WH-CH720N changes modes when its audio cable is plugged in. See what happens to Bluetooth, call input, noise canceling and the earcup controls.

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The Sony WH-CH720N can handle Bluetooth computer calls and wired listening, but plugging in its supplied audio cable changes the controls and call setup. Bluetooth stops working while that cable is connected. Treat it as a separate listening mode—not a way to keep the same wireless calling features without Bluetooth.

Plug in for listening, not the same call setup

The Black WHCH720N/B comes with two separate leads: a 3.5 mm headphone cable and a USB charging cable. Sony specifies the supplied headphone cable for wired listening, with its L-shaped plug at the source device.

Black Sony WH-CH720N headphones with the supplied USB charging cable and separate 3.5 mm audio cable — Two separate cables are included: a USB charging lead and a 3.5 mm audio cable for listening.

For a phone call in this wired setup, Sony tells you to answer on the phone and speak into the phone’s microphone; the caller’s voice comes through the headphones. That is different from using the headphone microphone over Bluetooth. It is not a blanket compatibility claim for computer audio jacks, adapters or meeting apps.

Leave power off—or keep noise canceling

The audio cable lets you listen with the headphones switched off. To use noise canceling or Ambient Sound Mode while plugged in, switch the headphones on. Wired listening therefore does not always mean battery-free operation: the extra sound modes still need power.

Person wearing black Sony WH-CH720N headphones outdoors — Noise canceling also works with the supplied audio cable, but the headphones must be powered on. Supplier promotional image; not a MOREGOSU test.

There is another change you can feel at the earcup. With the cable connected, the volume and playback/call buttons do not work. Adjust volume and pause playback on the source device instead. The NC/AMB button needs the headphones powered on.

Close-up of the Sony WH-CH720N volume, playback and NC/AMB buttons — With the audio cable connected, use the source device for volume and playback. The headphone volume and playback/call buttons are unavailable.

Return to Bluetooth for computer calls

Sony’s computer-call instructions use a Bluetooth connection. In the calling app, choose the headphone’s call connection (HFP/HSP) for both speaker and microphone, rather than the music-only A2DP connection.

The labels vary by computer and app: you may see a hands-free headset name or simply WH-CH720N. Sony notes that some apps may not offer the function and that behavior can vary by computer. This is a configuration requirement, not a promise that every meeting app will work.

Two connected devices still take turns

For a laptop-and-phone Bluetooth setup, enable the two-device connection option in Sony’s companion app. Multipoint keeps two devices connected; it does not blend their audio. To switch music sources, stop playback on the first device, then start it on the other.

Person wearing black Sony WH-CH720N headphones beside a laptop while holding a phone — Enable two-device connection in the Sony companion app. Compatibility varies; multipoint does not mix two audio streams. Laptop and phone are not included.

The useful distinction is simple: the cable provides another way to listen, while Bluetooth provides the documented computer-call setup. If your purchase depends on wired headset-microphone input for a particular computer, do not treat the included audio cable as confirmation of that capability.

View the Sony WH-CH720N in Black on Amazon

Based on Sony’s WH-CH720N documentation and the selected Amazon listing and images, not hands-on testing.