A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
The Bose QuietComfort Ultra Earbuds are a more budget-friendly option with features like noise cancellation and wireless convenience suitable for everyday use. They also offer a comfortable fit, integrated microphone for calls, and are likely to have a user-friendly experience with touch controls. In comparison, the Thieaudio Monarch Mk II are higher priced, wired earbuds that focus on providing the highest quality audio experience, often favored by audiophiles. They feature balanced audio capability but lack active noise cancellation and wireless connectivity. Consider the Bose earbuds for general use, portability, and noise cancellation or the Thieaudio earbuds for studio-quality sound in quiet environments. 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 QuietComfort Ultra Earbuds
- Very good for gaming
- Very good for exercise
- Very good for air travel
Advantages of the Thieaudio Monarch Mk II
- Best in class for music
- Good for podcasts and audiobooks
Key differences
Music
8.6
9.5
The Thieaudio Monarch Mk II is best in class for music, while the Bose QuietComfort Ultra Earbuds is very good.
Gaming
8.8
6.7
The Bose QuietComfort Ultra Earbuds is very good 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 QuietComfort Ultra Earbuds is only fair.
TV and Video
8.1
8.8
The Thieaudio Monarch Mk II and Bose QuietComfort Ultra Earbuds are both very good for TV and video, though the Thieaudio Monarch Mk II is somewhat better.
Noise Reduction
8.9
6.0
The Bose QuietComfort Ultra Earbuds is very good for noise reduction, while the Thieaudio Monarch Mk II is only fair.
Battery
6.5 Hours
N/A
The Bose QuietComfort Ultra Earbuds has 6.5 hours of battery life. The Thieaudio Monarch Mk II does not have a battery.
Cost
$249
$999
$100
$150
$200
$250
$300
$350
$400
The Bose QuietComfort Ultra Earbuds has a price of $249 and the Thieaudio Monarch Mk II costs $999.
Let Us Help Find Your Perfect Headphones
Find your new headphones
Key similarities
Phone Calls
5.1
5.1
The Bose QuietComfort Ultra Earbuds and Thieaudio Monarch Mk II are both poor for phone calls.
Build Quality
9.0
9.0
The Bose QuietComfort Ultra Earbuds and Thieaudio Monarch Mk II both have excellent build quality.
Give feedback
We’re constantly working to improve.
How the Bose QuietComfort Ultra Earbuds and the Thieaudio Monarch Mk II compare to other earbuds and headphones
Spec Comparison
 |  | |
| Bose QuietComfort Ultra Earbuds | Thieaudio Monarch Mk II |
GENERAL | |||
|---|---|---|---|
| Price | |||
$249 | $999 | ||
Brand | |||
Brand | Bose | Thieaudio | |
Release Date | |||
Release Date | September 1, 2023 | October 1, 2020 | |
Form Factor | |||
Form Factor | Earbuds | Earbuds | |
Connectivity | |||
Connectivity | Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.7/10 | 9.5/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.1/10 | 5.1/10 | |
Gaming Score | |||
Gaming Score | 8.8/10 | 6.8/10 | |
TV and Video Score | |||
TV and Video Score | 8.2/10 | 8.9/10 | |
Exercise Score | |||
Exercise Score | 8.4/10 | 4.5/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 6.5 Hours | N/A | |
Wireless charging | |||
Wireless charging | No | N/A | |
Charging time | |||
Charging time | 2 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5.3 | N/A | |
Case Battery Life | |||
Case Battery Life | 21 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | No | |
Noise Reduction Score | |||
Noise Reduction Score | 8.9/10 | 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 | 6.2/10 | N/A | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 9/10 | 9/10 | |
Comfort score | |||
Comfort score | 8.4/10 | 7.6/10 | |
Size | |||
Size | Medium | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 7.7 Grams | 9 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
Bose QuietComfort Ultra Earbuds
See more
Dig into reviews and images
Soundguys
Christian Thomas | October 2023
"Bose put the time in to fix the major issues with the previous earbuds, and the Bose QuietComfort Ultra Earbuds are very befitting of its price point. While you might be tempted to save a few bucks and go with the Bose QuietComfort Earbuds II on sale, fight the urge. There are enough upgrades here to justify the newer model."
Thieaudio Monarch Mk II
See more
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 QuietComfort Ultra Earbuds 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.
Give feedback
We're constantly perfecting our model
Earbuds or Headphones guides you might be interested in
More comparisons for you
Compare Bose QuietComfort Ultra Earbuds vs. Sennheiser Momentum 4
VS
Compare Bose QuietComfort Ultra Earbuds vs. Sennheiser Momentum True Wireless 3
VS
Compare Bose QuietComfort Ultra Earbuds vs. Grado GT220
VS
Compare Thieaudio Monarch Mk II vs. HifiMan Arya Stealth
VS
Compare Thieaudio Monarch Mk II vs. Bang and Olufsen Beoplay H95
VS
Compare Thieaudio Monarch Mk II vs. Audeze LCD 2 Classic
VS
FAQs
FAQs about earbuds and headphones
Why trust us
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.
By the numbers
108
Earbuds and headphones evaluated
11,340
Earbuds and headphones stats compiled
15
Proprietary Earbuds and headphones ratings developed
127,400
Recommendations made
19,110
Consumer hours saved
About the Earbuds or Headphones team
Joe Golden, Ph.D
CEO and Earbuds and Headphones Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
Jason Lew
Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.
Chandradeep Chowdhury
Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
Luis Torres
Earbuds and Headphones Expert
Luis is a Mexico-based headphones expert. He’s been making headphone recommendations for five years and has close to 100 pairs in his personal collection.
Featured in
