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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 10, 2024·
If noise cancellation is key for you and you often travel by air, Bose Quiet Comfort Ultra Headphones have excellent active noise cancelling and are very comfortable, making them well-suited for long flights. They also feature wireless connectivity with low latency, suitable for TV and videos, and their foldable design improves portability. However, if you prioritize sound quality for music and have a higher budget, Thieaudio Monarch Mk II offers superior audio but lacks wireless functionality and noise cancellation. They are less ideal for calls and meetings due to poor microphone quality, and they aren't sweatproof, making them less suitable for exercise. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the Bose Quiet Comfort Ultra Headphones
- Excellent for gaming
- Excellent for TV and video
- Best in class for air travel
Advantages of the Thieaudio Monarch Mk II
- Best in class for music
- Good for podcasts and audiobooks
Key differences
Music
8.3
9.5
The Thieaudio Monarch Mk II is best in class for music, while the Bose Quiet Comfort Ultra Headphones is very good.
Gaming
9.3
6.7
The Bose Quiet Comfort Ultra Headphones is excellent for gaming, while the Thieaudio Monarch Mk II is only fair.
Podcasts and Audiobooks
6.0
7.9
The Thieaudio Monarch Mk II is good for podcasts and audiobooks, while the Bose Quiet Comfort Ultra Headphones is only fair.
Noise Reduction
9.1
6.0
The Bose Quiet Comfort Ultra Headphones is excellent for noise reduction, while the Thieaudio Monarch Mk II is only fair.
Battery
29.0 Hours
N/A
The Bose Quiet Comfort Ultra Headphones has 29 hours of battery life. The Thieaudio Monarch Mk II does not have a battery.
Cost
$429
$999
$200
$250
$300
$350
$400
The Bose Quiet Comfort Ultra Headphones has a price of $429 and the Thieaudio Monarch Mk II costs $999.
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Key similarities
Phone Calls
5.3
5.1
The Bose Quiet Comfort Ultra Headphones and Thieaudio Monarch Mk II are both poor for phone calls.
TV and Video
9.0
8.8
Although they have very similar scores, PerfectRec considers Bose Quiet Comfort Ultra Headphones to be excellent for TV and video, while the Thieaudio Monarch Mk II is very good.
Build Quality
9.0
9.0
The Bose Quiet Comfort Ultra Headphones and Thieaudio Monarch Mk II both have excellent build quality.
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How the Bose Quiet Comfort Ultra Headphones and the Thieaudio Monarch Mk II compare to other earbuds and headphones
Spec Comparison
 |  | |
| Bose Quiet Comfort Ultra Headphones | Thieaudio Monarch Mk II |
GENERAL | |||
|---|---|---|---|
| Price | |||
$429 | $999 | ||
Brand | |||
Brand | Bose | Thieaudio | |
Release Date | |||
Release Date | November 1, 2023 | October 1, 2020 | |
Form Factor | |||
Form Factor | Headphones | Earbuds | |
Connectivity | |||
Connectivity | Wired + Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.3/10 | 9.5/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.3/10 | 5.1/10 | |
Gaming Score | |||
Gaming Score | 9.3/10 | 6.8/10 | |
TV and Video Score | |||
TV and Video Score | 9.1/10 | 8.9/10 | |
Exercise Score | |||
Exercise Score | 6.4/10 | 4.5/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 29 Hours | N/A | |
Wireless charging | |||
Wireless charging | No | N/A | |
Charging time | |||
Charging time | 3 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5.3 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | No | |
Noise Reduction Score | |||
Noise Reduction Score | 9.1/10 | 6/10 | |
Virtual Surround | |||
Virtual Surround | Yes | N/A | |
Android App | |||
Android App | Yes | N/A | |
iOS App | |||
iOS App | Yes | N/A | |
Mic Quality | |||
Mic Quality | 7.4/10 | N/A | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 9/10 | 9/10 | |
Comfort score | |||
Comfort score | 10/10 | 7.6/10 | |
Size | |||
Size | N/A | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 255 Grams | 9 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
Bose Quiet Comfort Ultra Headphones
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Dig into reviews and images
SoundGuys
Christian Thomas | January 2024
"The Bose QuietComfort Ultra Headphones are a credible step up from previous Bose ANC headphones, and they're built to hang tough with the competition for years into the future. No waterproofing is a bit of a letdown, but these headphones have the technical chops to make most quite happy."
Thieaudio Monarch Mk II
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Dig into reviews and images
Audiophile On
Audiophile On | August 2021
"No other earphone I have listened to in the past 12 months has given me as much joy as the Thieaduio Monarch MKII. One of those IEMs will make you question where we can go from here. The sound is jaw-dropping, leaving you wanting more and more. It makes you want to run through your entire music library and reevaluate. It makes you not feel bad about paying full price for them, especially in a hobby where buyers' remorse is genuine. For me, it's top tier, rivaled by a few but not surpassed."
Get a great deal on the Bose Quiet Comfort Ultra Headphones or the Thieaudio Monarch Mk II
About Bose
Bose is an American audio equipment manufacturer based out of Framingham, Massachusetts. Founded in 1964 by Amar Bose with the goal of creating a speaker system that could accurately recreate the sound of a concert hall, Bose has become one of the most prominent players in the modern consumer audio market due to the premium feel of their products and their wide brand recognition.
About Thieaudio
Thieaudio is the in-house brand of Linsoul Audio, a Chinese earbud and headphone retailer specializing in what the community lovingly calls Chi-fi, that is high fidelity brands out of China. Thieaudio was established in 2019 as the creative engineering branch of Linsoul. As of today, they market three different lines of earbuds, Voyager, Legacy and the extremely well-received Monarch.
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This information was produced and vetted by the PerfectRec earbuds & headphones team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest earbuds or headphones information and makes it digestible for you.
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