The catch
Sony WH-CH730N
LDAC is not supported. LE Audio requires a supported Android phone and the right setup, so the newer Bluetooth version is not an upgrade for everyone.
Side by side
WH-CH730N is the better choice for a lighter daily pair, tactile playback buttons and a larger published ANC-on music allowance. ULT WEAR is the better choice if you want its bass modes and touch controls over Bluetooth. WH-CH730N weighs 48 g less, and ULT WEAR loses LDAC when two devices are connected. ULT bass control also stops in analog mode. Look at its serial-specific US service notice before committing to the selected unit.
Before you buy
You might want higher-rate music from one device and still be reachable for calls on another. ULT WEAR supports each of those jobs, but its manual says switching on two-device connection disables LDAC and falls back to AAC or SBC. CH730N has no LDAC to begin with. So if that second connection stays on all day, ULT’s codec list is a poor reason to pick it over the lighter CH730N. Its Bluetooth bass controls can still make it worth choosing. And if your music comes from one compatible source and you can drop the second connection, LDAC matters again.
Where this comes from
The two-device restriction in the ULT manual is set against listening to music while staying reachable on a work phone. The supported codecs for CH730N are facts for that exact model. We infer no simultaneous LC3 multipoint, no audible codec advantage and no guaranteed call delivery.
The catch
LDAC is not supported. LE Audio requires a supported Android phone and the right setup, so the newer Bluetooth version is not an upgrade for everyone.
The catch
Two-device mode turns off LDAC, and analog input turns off ULT bass control. Sony runs a service program for certain joint-failure serial ranges, so verify the unit you pick and the terms.


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Sony WH-CH730N and ULT WEAR for commuting, work calls and bass-heavy music. See which features stop working once you add a second device or an audio cable.
These are mainstream Sony ANC headphones for commuting and everyday music. Search Console already shows people cross-shopping the exact newer CH730N with ULT, even though an older CH720N comparison is the one getting that query.
Which one fits
CH730N weighs 207 g against 255 g and has physical Bluetooth playback controls.
Those presets are on ULT. They switch off during calls and analog listening.
CH730N lacks LDAC. ULT turns it off in two-device mode.
ULT documents Quick Attention. It takes a free hand and does not ensure you hear every sound.
In practice
You might want higher-rate music from one device and still be reachable for calls on another. ULT WEAR supports each of those jobs, but its manual says switching on two-device connection disables LDAC and falls back to AAC or SBC. CH730N has no LDAC to begin with. So if that second connection stays on all day, ULT’s codec list is a poor reason to pick it over the lighter CH730N. Its Bluetooth bass controls can still make it worth choosing. And if your music comes from one compatible source and you can drop the second connection, LDAC matters again.
The two-device restriction in the ULT manual is set against listening to music while staying reachable on a work phone. The supported codecs for CH730N are facts for that exact model. We infer no simultaneous LC3 multipoint, no audible codec advantage and no guaranteed call delivery.
If you pick ULT for bass-heavy playlists, you may expect the same feature at a plane seat or on an older television. The manual says outright that the ULT button is disabled whenever the headphone cable is connected, even with the headphone powered on. Both models can play passively with an empty battery, without ANC, and both lose Bluetooth while cabled. Quick Attention on ULT stays available in powered analog mode, but the bass boost does not. If analog listening makes up much of your use, choose by the sound and fit you hear in that mode. The Bluetooth bass feature then stops being a reason to pay for ULT.
This sets the exact analog-mode exclusions against travel or shared-TV use. A suitable source output and the supplied cable are required. We do not claim the models sound the same in passive mode or offer a headset microphone over analog.
The CH730N headline is up to 50 hours of music with ANC, and Sony lists up to 35 hours of calls with ANC separately. Going by the same model’s published figures, the call maximum is 30% lower. ULT lists up to 30 hours of AAC or SBC music with ANC and up to 30 for calls, and LDAC music drops to 25. CH730N still has the larger published allowance, but the gap narrows if you take meetings all day. Do not convert either rating into a promised number of working days. How much time you spend on calls, your volume and the processing you turn on all change the charging plan.
(50 minus 35) divided by 50 = 30%, drawn from CH730N manufacturer claims alone. ULT figures depend on the mode. We assume no matched endurance test and no linear blend of music and call hours.
With ULT’s Quick Attention, playback lowers while you hold your hand over the touch panel and returns when you let go. That suits a short chat at the office, since you do not have to find a small button. It helps less when both hands are full carrying a bag or assisting someone. CH730N has a dedicated physical ambient-mode button instead, along with tactile marks on its playback controls. Try the movements you will really use, especially if a precise touch gesture feels awkward. Neither mode works as a safety system for traffic, watching children or catching every announcement, and weight alone cannot decide comfort.
A momentary touch gesture is compared with a physical button, in the context of busy hands and brief interruptions. We claim no performance specific to any disability, no health benefit and no guaranteed awareness of your surroundings.
Plug in your setup
Start with how you listen. Charging over USB is not the same as playing audio over USB, and some headphones need power even on a cable. These answers are placeholders until you apply your own.
Plays over Bluetooth.
Plays over Bluetooth.
Battery figures are maker claims for the stated mode. They do not reflect measured travel time. Volume, codec, calls and battery age all change runtime. Closed earcups can still leak some sound. Weight alone does not predict comfort. USB audio needs a compatible source and cable. This check does not judge sound quality, mic quality or amplifier power.

Sony, WH-CH730N
For everyday Bluetooth use, you like the 207 g body and its separate tactile volume and playback buttons.

Sony, ULT WEAR
ULT bass controls for Bluetooth music are what you’re after. They stop working through a cable, and the selected unit needs a serial-specific service check.
Spec by spec
| Spec | Sony WH-CH730N | Sony ULT WEAR | In practice |
|---|---|---|---|
| Bluetooth music and calls | Up to 50 h music or 35 h calls with ANC | Up to 30 h AAC/SBC music or calls with ANC, 25 h LDAC music | On a day full of calls you cannot rely on the longest music rating. These are manufacturer maximums. |
| Daily handling | 207 g and tactile playback buttons | 255 g and touch playback controls | CH730N sheds 48 g. Pick the control style that you can operate comfortably. |
| Analog fallback | Passive music, no Bluetooth, source playback controls | Passive music, no Bluetooth, no ULT bass control | With the cable you can still listen at a basic level, but not with every wireless feature. |
| Brief conversation | Separate NC/AMB button | Hold the touch panel for Quick Attention | ULT uses a momentary gesture and CH730N a physical mode switch. Neither one guarantees you will hear every important sound. |
Trade-offs
Change of plan
Go with Sony WH-CH730N. With CH730N you skip hauling extra weight for an LDAC mode that your ULT routine would switch off.
Go with Sony ULT WEAR. ULT has them, but keep its cable restrictions and the serial-specific service check in mind.
Neither model fits. No documented configuration of either one satisfies both requirements together.
Decision guide
The music features advertised on the box are what you want, but a second phone and a backup cable can switch those features off.
By the numbers
What we found across the headphones we compare, plus the checked facts behind each finding.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Sony WH-CH730N |
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| Sony ULT WEAR |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

For everyday Bluetooth use, you like the 207 g body and its separate tactile volume and playback buttons.
Your day splits between music and calls, so the ANC maxima to plan around are 50 hours for music and 35 hours for calls.
See price & reviews on Amazon
ULT bass controls for Bluetooth music are what you’re after. They stop working through a cable, and the selected unit needs a serial-specific service check.
Touch controls and the hold-to-hear Quick Attention routine suit you. Compare the unit’s serial number against the US service notice.
See price & reviews on AmazonEach link opens in a new tab.
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