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The Bose QuietComfort 45 resting atop a plastic head.

Bose QuietComfort 45 review

Don't fix what ain't broke.
By
January 27, 2023
7.9
Bose QuietComfort 45
The bottom line
The Bose QuietComfort 45 has all the parts to be a great ANC headset, but it doesn't quite have the finish. Sound quality isn't all that great, even if the ANC is among the best in class.

Bose QuietComfort 45

The Bose QuietComfort 45 has all the parts to be a great ANC headset, but it doesn't quite have the finish. Sound quality isn't all that great, even if the ANC is among the best in class.
Release date

September 23, 2021

Price

Original: $329 USD

August 2022: $279 USD

Dimensions

184 x 152 x 76mm (headset)

211 x 145 x 51 (case)

Weight

240g

Model Number

866724-0100

Waterproof

No

What we like
Outstanding noise cancelling
USB-C port
Comfortable over long periods of time
Wired and wireless playback
In-app EQ
What we don't like
Sound quality
SBC and AAC only, no aptX
Only way to turn off ANC is to turn on Aware mode; no true "off" listening mode
7.9
SoundGuys Rating
7.8
User Rating
Rating Metric
Our Rating
User Rating
Sound Quality
8.8
7.7
8.0
Bass
9.7
8.0
8.0
Midrange
9.7
8.1
8.0
Highs
8.0
7.8
8.0
Isolation / Attenuation
7.1
7.7
8.0
Active Noise Cancelling
8.5
8.3
8.0
Durability / Build Quality
6.9
6.8
7.0
Value
6.4
6.8
7.0
Design
7.5
8.2
8.0
Connectivity
7.7
8.2
8.0
Microphone
6.0
6.8
7.0
Portability
7.5
8.9
9.0
Battery Life
9.4
8.6
9.0
Feature
6.0
6.6
7.0
Comfort
9.2
8.9
9.0

When most people think of active noise cancelling (ANC) headphones, they think of some iteration of Bose’s cans. For a long time, its offerings were among the most popular on the market, famed for their effectiveness and relative ease of use. It’s been two years since the release of the Bose Noise Cancelling Headphones 700, and five since the original QuietComfort 35 hit the shelves. Do we need a new headset with the Bose QuietComfort 45? We spent a week with the Bose QC 45 to learn everything you need to know before buying.

Editor’s note: this Bose QuietComfort 45 review was updated on January 27, 2023 in order to add test data to compare the Sennheiser MOMENTUM 4 Wireless.

About this Bose QuietComfort 45 review: We tested the Bose QuietComfort 45 for one week with firmware version 1.0.3. SoundGuys purchased the unit for this review.

What is the Bose QuietComfort 45 like to use?

Bose’s ANC headphones are a bit of an archetype, and that’s for good reason: they’re very good at providing comfort and ease of use to most people. The Bose QuietComfort 45 is no different. If there’s one major positive about the QC 45 looking almost identical to its predecessors, it’s that you’re not in for any major surprises.

A man uses the control cluster on the back of the Bose QuietComfort 45.
Using physical buttons means pressing into the earcup and potentially dislodging it.

The ear cups are decently large, and the headset weighs in a a reasonable 240 grams, and distributes its weight well enough to not cause much fatigue over long periods of time. The synthetic leather ear pads are dense enough to offer decent isolation, and the band also provides a bit of padding on the top.

Inside the packaging of the Bose QuietComfort 45 is a travel case, 3.5mm-2.5mm TRS cable, a USB type A to C cable, and assorted documentation. There aren’t airplane adapters of any kind, which is either a funny nod to the state of the world, or another reminder that I’m old and should probably stop expecting these things.

A photo of the Bose QuietComfort 45 resting on a wooden table.
Meet the new QuietComfort 45, a very similar model to the QuietComfort 35 II.

One of the biggest updates to the new design of the Bose QuietComfort 45 is the jump from the outdated microUSB port to USB-C. Of course, this is mainly for charging your headphones, so it’s nice to not have to futz with microUSB anymore. It always feels like I’m trying to mash the wrong sides of LEGO together when I plug in a microUSB cable in the dark, so I appreciate the update.

Speaking of updates, the Bose QuietComfort 45 looks slightly different than the Bose QuietComfort 35 II it replaces. Gone are all the little holes in the back of the ear cups, and instead the outer plastic is smooth. While there are still a number of microphones used for active noise cancelling, they’re definitely not as noticeable as before.

What are the controls of the Bose QuietComfort 45 like?

Controlling headphones like the Bose QuietComfort 45 is pretty straightforward once you get used to it, but there are a few foibles to go over.

A photo of the back of the Bose QuietComfort 45's ear cups, along with the control cluster.
Playback controls can be found on the back of the headphones.

The buttons on the back of each earcup are fairly intuitive, but can be a bit odd to get used to in a world of touch controls. However, for those who don’t like trusting controls susceptible to failure in colder climes, buttons are reliable at least.

Playback controls live on the right side of the headphones, and voice assistant and ANC toggle lives on the left. Unfortunately, you can’t turn off the ANC if the headphones are switched on; you can only toggle a mode called “aware” that allows some passthrough of your surroundings using the external mics of the Bose QuietComfort 45—an unfortunate feature we’ve seen with the Microsoft Surface Headphones 2.

Below is a complete rundown of the default Bose QC 45 controls:

ACTIONTOP BUTTON (right)MIDDLE BUTTON (right)BOTTOM BUTTON (right)ACTION BUTTON (left)
ACTION
One press
TOP BUTTON (right)
Volume up
MIDDLE BUTTON (right)
Play/pause, answer/end call
BOTTOM BUTTON (right)
Volume down
ACTION BUTTON (left)
Toggle ANC mode
ACTION
Two presses
TOP BUTTON (right)

MIDDLE BUTTON (right)
Next track
BOTTOM BUTTON (right)

ACTION BUTTON (left)
Mute call
ACTION
Three presses
TOP BUTTON (right)

MIDDLE BUTTON (right)
Previous track
BOTTOM BUTTON (right)

ACTION BUTTON (left)
N/A
ACTION
Press and hold
TOP BUTTON (right)

MIDDLE BUTTON (right)
Decline call
BOTTOM BUTTON (right)

ACTION BUTTON (left)
Voice assistant

How does the Bose QuietComfort 45 connect to your device?

A photo of the 3.5mm headphone jack on the Bose QuietComfort 45
If you prefer wired listening, you can make use of the included cable.

The Bose QuietComfort 45 connects to your smartphone or source via the Bluetooth 5.1 hardware nestled inside the ear cups, or you can hardwire it via the 2.5-to-3.5mm TRS cable included in the packaging. When you go wireless, you can move up to nine meters away from your source device before connection hiccups occur.

If you were hoping for a higher-end Bluetooth codec on Bose’s latest, you’ll be disappointed: the QC 45 doesn’t support aptX or high-bitrate Bluetooth codecs. While this may be disappointing to some, the implementations of SBC and AAC have improved over the years.

Yes, the QC 45 supports both wireless and wired playback. You can use the provided cable that can be plugged into the left ear cup of the Bose QuietComfort 45. While smartphones with headphone jacks are becoming an endangered species, this headset will allow you to listen with wired equipment.

Should you download the Bose Music app?

You will need to download the Bose Music app (iOS/Android) to get the most out of your headphones; otherwise, you won’t be able to get the voice assistant or other features working.

When you open the Bose Music app, you’ll be prompted to share way too much information like location, call and message history, but it’s the price of entry for this kind of feature nowadays. Once you accept, the app will set up your profile and locate your headphones (presumably, in your hands or on your head). After this process completes you’ll be able to rename your Bose QuietComfort 45, mess with the options a bit, and that’s really about it.

Three screenshots of the February 2022 update of the Bose Music app with the Bose QuietComfort 45 connected showing from left to right a neutral EQ, the home screen with a new EQ button visible, and the EQ with Treble Reducer activated.
The Bose QuietComfort 45 added an in-app EQ in February 2022 to the Bose Music app via a firmware update, which is quite handy to have.

In February 2022, Bose added an equalizer to the Bose Music app for the QuietComfort 45 via a firmware update (Version 2.0.4). That means you can fine-tune these headphones to your liking and deal with the wonky default sound profile (more on that below). You’ll need the latest version of the Bose Music app to see this feature

If you need to update the headphones over USB, that’s easily accomplished using the Bose Updater tool over the included USB-C cable. Bose headphones have had a habit of botched updates over Bluetooth, so if that happens with these cans: just follow these instructions to fix it and you should be fine.

How good is the battery life of the Bose QuietComfort 45?

With noise cancelling on, the Bose QuietComfort 45 lasts 24 hours, 49 minutes, surpassing Bose’s official 24-hour battery life for the headset. Our battery tests are performed by subjecting a headset to a constant output of music peaking 75dB(SPL) until the batteries deplete, so if you listen at lower volumes, you’ll may well surpass the 25-hour-mark.

You can use the USB-C cable to fast charge the QC 45. A quick 15-minute charge yields 180 minutes of playtime.

How well does the Bose QuietComfort 45 cancel noise?

A chart showing the Bose QuietComfort 45's isolation and active noise cancelling performance. The moderately high isolation and very high ANC performance holds well through all frequencies.
A worthy upgrade to the Bose QuietComfort 35 II, the Bose QuietComfort 45 has an outstanding ANC system.

The Bose QuietComfort 45 does an excellent job at cancelling outside noise with its updated ANC system. Specifically, it does a surprisingly good job at dulling noises in the mids and highs that most headsets don’t attenuate terribly well.

That sounds amazing, but in practice, it means that airplane engine hum will sound one-eighth as loud. Not Earth-shattering, but a noticeable improvement nonetheless. The redesign of these headphones also improved the isolation somewhat, and that pays dividends in the form of increased high-frequency attenuation.

Though we hesitate to crown the Bose QuietComfort 45 the king of ANC, Bose is definitely keeping pace with Sony and Apple after getting leapfrogged for a few years there. Bear in mind that there’s no way to disable the active noise cancelling without enabling Aware mode on the QC 45. At least with the Bose QC 35 II, which lacks an Aware mode, you can turn off ANC and enjoy music.

A chart showing the very effective noise canceling performance of the Bose QuietComfort 35 II headphones, and Gaming Headset.
The Bose QuietComfort 35 II were also impressive noise cancelers.

If you owned the Bose QuietComfort 35 or Bose QuietComfort 35 II, you won’t notice a massive upgrade here. But because the newer Bose QuietComfort 45 provides better passive isolation, overall performance is measurably improved, even though the Bose QuietComfort 35 II was already pretty great.

How good does the Bose QuietComfort 45 sound?

A chart showing the frequency response of the Bose QuietComfort 45 (cyan), compared to the SoundGuys house curve (pink)
The Bose QuietComfort 45 sticks to our target really well until 2kHz; then it adds about 5dB of extra energy in the highs.

As much as I’d love to tell you that the Bose QuietComfort 45 offers some sort of improvement over its predecessors, I can’t. It’s fine, decent even—just not great. A lot of our gripes with the headset have to do with an overemphasized high-end relative to our target in its out of the box tuning. This does a good job making speech intelligible; however, it makes busy tracks with a lot of high frequency content like punk, and some 90s-2000s pop tracks sound pretty terrible. Of course, there’s plenty of blame that falls on the producers of these tracks—but at the time, they were mixing for the “bass boost” crowd, and consequently weren’t thinking the world would ever have to deal with equipment with this much high-end emphasis. It’s not Bose’s fault that these tracks weren’t well-mixed, but it’s much more grating with a sound like that of the Bose QuietComfort 45.

Nowhere is this unwelcome high end emphasis more apparent than on Green Day’s Insomniac—oh, does it sound awful on the Bose QuietComfort 45. Not only do the vocals and drums take a backseat to the cymbals and room sounds, but turning the volume up to compensate drives these grating sounds to even more annoying levels.

The Bose QuietComfort 45 makes podcasts and spoken-word content sound okay.

You can try your hand at checking out songs that you like, but if there’s any Rob Cavallo in your library, that house sound has the same issue with any headphones that overemphasize high-frequency sound to this degree. Protip: do not play any punk with these headphones without equalizing them first.

Where the Bose QuietComfort 45 does well is in newer mixes that are much more vocal-heavy (or the much-maligned Clear Channel “stomp-clap-‘HEY’ “ genre that includes Mumford and Sons, etc). So for example, Logic’s 2020 album No Pressure and Lil Nas X’s MONTERO will sound far, far better than the aforementioned older songs.

Additionally, you may find that podcasts in particular sound better than they typically do on bassier headphones, because the relative emphasis on second and higher-formant speech sounds does wonders for intelligibility. Like I said: not bad, just strange.

Using the EQ in the Bose Music app, in your music player app like Amazon Music HD, or one on the system level, drop 3-20kHz by about 5dB; your hearing will thank you. That’s not to say that these are bad headphones, it’s just that sometimes you’ll be assaulted by a song mixed for another time that doesn’t hold up. Anything with lots of cymbal shimmer will be a bit grating, and speech intelligibility suffers a bit in mixes with a lot of high-end sounds because of this emphasis.

A plot showing how close to our target you can get with the supplied equalizer adjustments.
By using our settings, you can get pretty close to our consumer target.

To get the most out of the Bose QuietComfort 45, you’re going to want to apply these changes to the EQ section of your app (measured results in the thumbnail):

BandAdjustment
Bass
-5
Mid
0
Treble
-10

How good does the Bose QuietComfort 45 microphone sound?

The microphone sounds okay enough. Bose knows its stuff, but you’re going to be able to squeeze blood from a stone. Small embedded mics do okay, but they will not replace a dedicated boom mic anytime soon. Still, take a listen and tell us what you think!

Bose QuietComfort 45 microphone demo (Ideal conditions):

Bose QuietComfort 45 microphone demo (Street conditions):

Bose QuietComfort 45 microphone demo (Windy conditions):

How does the sample sound to you?

4791 votes

Should you buy the Bose QuietComfort 45?

If you buy the Bose QuietComfort 45, you get a competent set of noise cancellers. Adding an EQ to the Bose Music app is also good news.

A photo of the USB-C port of the Bose QuietComfort 45.
Pictured: the main reason to get the Bose QuietComfort 45 over its predecessor.

The Bose QuietComfort 45 at its original price is not worth the money when you can get the Bose Noise Cancelling Headphones 700 for $379 at Amazon, or the Bose QuietComfort 35 II for $329.64 at Amazon. However, you can easily find the QC 45 for $279 USD, which sweetens the deal. Still, the biggest downside to grabbing the older headset is the microUSB port. Consequently, if you can’t find a good deal on the QC 45, I recommend you find the Bose QuietComfort 35 II on sale somewhere to save you some money over the new one.

When you consider that the Bose QuietComfort 45’s problems really are something that could be coded away or developed for, I’m not comfortable telling you that this isn’t a good headset, or that you should avoid it altogether.

Bose QuietComfort 45Bose QuietComfort 45
Bose QuietComfort 45
Excellent ANC • EQ adjustable • Comfortable ear pads
An ANC headset that provides comfort and ease of use.
The Bose QuietComfort 45 does an excellent job cancelling outside noise, and it sounds great for podcast listening. It has a decent battery life, and the fast-charging USB-C adds another 180 minutes with only a 15-minute charge.

How does the Bose QuietComfort 45 compare to the Sony WH-1000XM5?

Side-on view of Sony WH-1000XM5 beside the Bose Quietcomfort 45 hanging over a white horizontal pipe
Embedded microphones have limitations compared to gaming headsets, but these two are pretty good.

The Sony WH-1000XM5 reigns as the best pair of Sony headphones you can buy, and it outperforms the Bose QC 45. Even with this win for Sony, there are some reasons to buy the QC 45 like price, default sound, and portability. Let’s start with price: the XM5 retails for less than $400 USD, while you can find the Bose QC 45 for less than $279 USD throughout the year. Even at its original price, the QC 45 is $60 USD cheaper than Sony’s headphones.

A chart compares the Sony WH-1000XM5 and Bose QuietComfort 45 ANC performances to one another, revealing that the two headsets are very close.
Both headsets will do well to block out background noise, but only Sony let’s you disable ANC and use the XM5 as a standard set of Bluetooth headphones.

That said, you can fully disable ANC on the WH-1000XM5 without the need to enable transparency mode. In other words, you can use Sony’s headset like a pair of standard, non-ANC headphones which can’t be said of the QC 45. When you do enable noise cancelling you’ll notice that it’s pretty tight between the two headsets but Sony more consistently blocks out frequencies higher than 1kHz.

The Bose QuietComfort 45 has less objectionable bass emphasis, but a lack of higher-quality codecs may frustrate you.
The Bose QuietComfort 45 has less bass emphasis, but a lack of higher-quality codecs may frustrate you.

Neither headset is perfect for the default frequency responses, but you get a bit more granularity from the Sony Headphones Connect app EQ module than the one in the Bose Music app.

We encourage you to read our complete Sony WH-1000XM5 vs Bose QuietComfort 45 article to learn which is right for you. You may even find yourself in another hard position: choosing between the Sony WH-1000XM5 and WH-1000XM4 or between the Bose Noise Cancelling Headphones 700 and WH-1000XM5. If you know you want the Sony WH-1000XM5 now, you can buy it for $398 at Amazon.

What are some alternatives to the Bose QuietComfort 45?

If you don’t want to spend the hefty sum of $329 USD, you may want to look into a few other models of headphones to ensure you’re not overspending. For example, the Sennheiser PXC 550-II and the Sony WH-1000XM4 both offer quite a bit more bang for the buck, and include creature comforts like in-app EQ and more audio quality-focused Bluetooth codecs like aptX and LDAC, respectively.

Neither the Shure Aonic 50 nor the Bose Headphones 700 (pictured, black) have folding hinges.
If you can find them on sale, the Bose Noise Cancelling Headphones 700 might be a better fit.

If you’re still considering the Bose QuietComfort 45, definitely take a good, hard look at its predecessor, the Bose QuietComfort 35 II. While it doesn’t have a USB-C port, it costs $80 USD less, and it performs about on par with the newer headset—minus the strange high-end emphasis.

While that may sound harsh, let’s look at some comparisons here. The high-end emphasis is very apparent when you compare the QuietComfort 45 with the other headsets in Bose’s stable. Both the Noise Cancelling Headphones 700 and the QuietComfort 35 II align with our targets better than the newer headphones. You can get a full comparison of the NCH 700 and QC 45 here.

Of course, when you get down to cost, some may find the Sony WH-1000XM4 to be much more their speed—the sticker price is $329 at Amazon, and the Sony cans offer more features and flexibility. If you have no set budget, both the AirPods Max and the Bose Noise Cancelling Headphones 700 will provide a measurable step up both in performance and features. The AirPods Max is about as pricey as it gets at $479.99 at Amazon.

If the treble-heavy sound of Bose isn’t for you, it’s wise to check out the Sennheiser MOMENTUM 4 Wireless instead. This headset will run you  $279.85 at Amazon and offers better sound quality than both Bose headphones without blasting the bass all that much. While it’s not quite as good at ANC as either the Bose headphones or Sony competitors, it’s good enough to quiet the worst sounds you encounter on a commute. It also offers almost double the battery life, at over 50 hours of runtime per charge.

Should you get earbuds instead of the Bose QuietComfort 45?

The Bose QuietComfort Earbuds noise cancelling true wireless earbuds next to the Bose Sport Earbuds for a size comparison.
Lily Katz / SoundGuys
The Bose QuietComfort Earbuds (left) is bulkier than the Bose Sport Earbuds (right).

If you want a more portable alternative to the Bose QuietComfort 45, the Bose QuietComfort Earbuds II is probably the first product that comes to mind. This is about as expensive as wireless earbuds get ($279 at Amazon), and frankly, it’s not as good of an all around package as the Bose QuietComfort Earbuds. Yes, the QC Earbuds II is more compact than the Bose QC Earbuds, but the older model has ear wings to keep the buds in place. You also get wireless charging in the older, albeit bulkier, case. Unlike the first-gen Bose QuietComfort Earbuds, you can’t disable ANC on the newer Bose QC Earbuds II. Instead, you run into the same issue as the QC 45: the only way to “disable” ANC is to enable transparency mode. If you’re between the Bose QuietComfort Earbuds II and the AirPods Pro (2nd generation), it becomes more about which OS your phone runs.

We can’t talk about the Bose QC Earbuds without discussing the Sony WF-1000XM4, sibling to the famed Sony WH-1000XM4. Sony’s flagship true wireless earbuds have an IPX4 rating and slightly better ANC than the QC Earbuds. The default sound quality is a bit wonky but, like the QC Earbuds in its mobile app, you can EQ the sound in the Sony Headphones Connect app. Learn more about the earbuds in our WF-1000XM4 video review.

A hand holds the open case of the Sennheiser MOMENTUM True Wireless 3 with blurred rocks in the background.
The very strong case magnet hampers single-handed operation, but this also means the MOMENTUM True Wireless 3 case stays closed in your bag.

We also like the Sennheiser MOMENTUM True Wireless 3 for its sleek design, IPX4 rating, excellent ANC, and optional wing tips. Alternatively, the CX Plus True Wireless is a great value-packed pair of ANC earbuds with a solid mobile app. The blocky shape may not be everyone’s cup of tea, but the aptX, AAC, and SBC support surely make up for it.

Frequently asked questions about the Bose QuietComfort 45?

Follow these directions to connect the Bose QuietComfort 45 via the Bluetooth menu of your phone:

  1. Slide the power/Bluetooth switch to the right. Hold it in that position for three seconds.
  2. The headset will relay, “Ready to connect,” and the status light near the volume controls will blink blue.
  3. Open your device’s Bluetooth menu; SettingsBluetooth.
  4. Enable Bluetooth on your device.
  5. Select “QuietComfort 45” from the list of available devices.

You can also use the Bose Music app (iOS and Android) to pair your QC 45 to your phone or tablet. The app will prompt you with specific pairing instructions.

Yes. In fact the Bose Noise Cancelling Headphones 700 got better ANC through a firmware update. Just because their headphones have some sort of shortcoming right now doesn’t mean it won’t get fixed in the future.

Yes, in February 2022, Bose added an EQ to the Bose Music app via a firmware update. Make sure you’ve got the latest firmware installed, and you should find the EQ there in the app.

At this point, if the connector is an issue for you, you may want to get the newer headphones. That isn’t something that can be easily fixed.

Sometimes! In fact the Bose Noise Cancelling Headphones 700 got better ANC through a firmware update. Just because their headphones have some sort of shortcoming right now doesn’t mean it won’t get fixed in the future.

Yes, the Bose QC 45 supports multipoint connectivity, so you can connect it to two source devices at simultaneously.

No, the QC 45 does not have a proximity sensor for auto play/pause like the Sony WH-1000XM4 and WH-1000XM5. The Bose NCH 700 lacks a proximity sensor too.