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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
If you prefer in-ear monitors with a more compact form and the convenience of a detachable cable for portability, the 7hz Timeless could suit you, and they are a bit cheaper. They have a closed-back design which can offer better noise isolation, making them a better choice for noisier environments. However, for the most immersive listening experience, especially for music and TV, the Sennheiser HD600 would stand out due to their open-back design and generally higher sound quality, but they are bulkier, not as portable, and typically cost more. Neither have wireless capability or active noise cancelling, but if comfort and soundstage are priorities, the Sennheiser is the better choice while the 7hz Timeless could be better for on-the-go listening. Both are wired and do not include a microphone, affecting their suitability for calls and gaming. 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 7hz Timeless
- The 7hz Timeless has no clear advantages over the Sennheiser HD600.
Advantages of the Sennheiser HD600
- Excellent for music
- Good for gaming
- Very good for TV and video
- Good for podcasts and audiobooks
Key differences
Music
8.6
9.3
The Sennheiser HD600 is excellent for music, while the 7hz Timeless is very good.
Phone Calls
4.3
5.0
The Sennheiser HD600 and 7hz Timeless are both poor for phone calls, though the Sennheiser HD600 is somewhat better.
Podcasts and Audiobooks
6.8
7.9
The Sennheiser HD600 is good for podcasts and audiobooks, while the 7hz Timeless is only fair.
TV and Video
7.8
8.9
The Sennheiser HD600 is very good for TV and video, while the 7hz Timeless is good.
Noise Reduction
5.3
2.5
The 7hz Timeless and Sennheiser HD600 are both poor for noise reduction, though the 7hz Timeless is somewhat better.
Cost
$185
$350
$100
$150
$200
$250
$300
$350
$400
The 7hz Timeless has a price of $185 and the Sennheiser HD600 costs $350.
Build Quality
8.5
9.0
The Sennheiser HD600 has excellent build quality, while the 7hz Timeless has very good build quality.
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Key similarities
Gaming
6.6
7.0
Although they have very similar scores, PerfectRec considers Sennheiser HD600 to be good for gaming, while the 7hz Timeless is only fair.
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How the 7hz Timeless and the Sennheiser HD600 compare to other earbuds and headphones
Spec Comparison
 |  | |
| 7hz Timeless | Sennheiser HD600 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$185 | $350 | ||
Brand | |||
Brand | 7hz | Sennheiser | |
Release Date | |||
Release Date | August 1, 2021 | January 1, 1997 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wired | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.6/10 | 9.3/10 | |
Phone Calls Score | |||
Phone Calls Score | 4.3/10 | 5/10 | |
Gaming Score | |||
Gaming Score | 6.7/10 | 7/10 | |
TV and Video Score | |||
TV and Video Score | 7.8/10 | 8.9/10 | |
Exercise Score | |||
Exercise Score | 4.3/10 | 4.5/10 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | No | |
Noise Reduction Score | |||
Noise Reduction Score | 5.3/10 | 2.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 9/10 | |
Comfort score | |||
Comfort score | 7/10 | 8.4/10 | |
Size | |||
Size | Large | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 5.5 Grams | 258.5 Grams | |
Waterproof Rating | |||
Waterproof Rating | 0 | 0 | |
Shopping
7hz Timeless
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Dig into reviews and images
Headphonesty
Kazi Mahbub Mutakabbir | May 2023
"7Hz picked a bold name for the Timeless and frankly, got very close to justifying their word choice. Most importantly, the Timeless are good to go in stock form, so you don’t have to worry about source-matching and such. I can recommend the 7Hz Timeless to those who do not mind a dash of brightness up top, want a taste of planar in IEM form, and want one of the most resolving pair of earphones in the $150 - $300 price range."
Sennheiser HD600
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Dig into reviews and images
Headphonesty
Jean Mouchet | September 2021
"The HD600 are state-of-the-art headphones with high sound quality and remarkable value, among most of the offerings in today’s time."
Get a great deal on the 7hz Timeless or the Sennheiser HD600
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.
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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.
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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.
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