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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
The Sennheiser Momentum 4 offers comfort, active noise cancelling, and a significantly longer battery life, making them well-suited for travel and extended listening sessions. With their over-ear design, they also have built-in controls and are compatible with lossless codecs, ensuring high sound quality for music lovers on various devices. On the other hand, the Thieaudio Monarch Mk II, being more expensive, delivers superior overall sound quality with a more complex driver system, which might appeal to audiophiles. They lack features like active noise cancelling and wireless connectivity, however, and are better for quiet environments where their intricate sound characteristics can be fully appreciated. 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 Sennheiser Momentum 4
- Excellent for gaming
- Very good for air travel
- Very good for podcasts and audiobooks
Advantages of the Thieaudio Monarch Mk II
- Best in class for music
Key differences
Music
7.5
9.5
The Thieaudio Monarch Mk II is best in class for music, while the Sennheiser Momentum 4 is good.
Gaming
9.0
6.7
The Sennheiser Momentum 4 is excellent for gaming, while the Thieaudio Monarch Mk II is only fair.
Phone Calls
6.8
5.1
The Sennheiser Momentum 4 is only fair for phone calls, while the Thieaudio Monarch Mk II is poor.
Noise Reduction
9.1
6.0
The Sennheiser Momentum 4 is excellent for noise reduction, while the Thieaudio Monarch Mk II is only fair.
Battery
59.0 Hours
N/A
The Sennheiser Momentum 4 has 59 hours of battery life. The Thieaudio Monarch Mk II does not have a battery.
Cost
$250
$999
$100
$150
$200
$250
$300
$350
$400
The Sennheiser Momentum 4 has a price of $250 and the Thieaudio Monarch Mk II costs $999.
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Key similarities
Podcasts and Audiobooks
8.2
7.9
Although they have very similar scores, PerfectRec considers Sennheiser Momentum 4 to be very good for podcasts and audiobooks, while the Thieaudio Monarch Mk II is good.
TV and Video
8.9
8.8
The Sennheiser Momentum 4 and Thieaudio Monarch Mk II are both very good for TV and video.
Build Quality
9.0
9.0
The Sennheiser Momentum 4 and Thieaudio Monarch Mk II both have excellent build quality.
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How the Sennheiser Momentum 4 and the Thieaudio Monarch Mk II compare to other earbuds and headphones
Spec Comparison
 |  | |
| Sennheiser Momentum 4 | Thieaudio Monarch Mk II |
GENERAL | |||
|---|---|---|---|
| Price | |||
$250 | $999 | ||
Brand | |||
Brand | Sennheiser | Thieaudio | |
Release Date | |||
Release Date | August 1, 2022 | October 1, 2020 | |
Form Factor | |||
Form Factor | Headphones | Earbuds | |
Connectivity | |||
Connectivity | Wired + Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7.5/10 | 9.5/10 | |
Phone Calls Score | |||
Phone Calls Score | 6.9/10 | 5.1/10 | |
Gaming Score | |||
Gaming Score | 9.1/10 | 6.8/10 | |
TV and Video Score | |||
TV and Video Score | 9/10 | 8.9/10 | |
Exercise Score | |||
Exercise Score | 6.4/10 | 4.5/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 59 Hours | N/A | |
Wireless charging | |||
Wireless charging | No | N/A | |
Charging time | |||
Charging time | 2 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5.2 | 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 | No | N/A | |
Android App | |||
Android App | Yes | N/A | |
iOS App | |||
iOS App | Yes | N/A | |
Mic Quality | |||
Mic Quality | 8/10 | 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 | N/A | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 294.8 Grams | 9 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
Sennheiser Momentum 4
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Sound Guys
Christian Thomas | January 2023
"If you're looking for a slightly more affordable set of ANC headphones in comparison to the Bose or Sony offerings: the Sennheiser MOMENTUM 4 Wireless is not a bad way to go. While its ANC is technically behind the other top-tier headphones, its sound quality is ahead of the pack—as is its battery life. Not bad for $350 USD."
Thieaudio Monarch Mk II
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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 Sennheiser Momentum 4 or the Thieaudio Monarch Mk II
About Sennheiser
A family-owned company, Sennheiser is a German, high fidelity, audio equipment manufacturer founded in 1945. Their consumer audio division is now owned by the Swiss hearing aid and cochlear implant manufacturer Sonova. Sennheiser offers a wide variety of, very high quality, audio equipment solutions, from headphones to earbuds, full sets of monitoring speakers, amplifiers and microphones. They also make what is widely regarded as the best, and most expensive, headphones in existence, the HE-1 Orpheus, costing a whopping $59,000 dollars.
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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