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![Sennheiser HD 620S - Perhaps Unexciting, But Worth Considering](http://headphones.com/cdn/shop/articles/P1005404_4cf4a744-dd17-40c3-93eb-0c448b314f08.jpg?v=1720991966&width=533)
Sennheiser HD 620S - Does It Deserve A Spot In The 6 Series?
Any headphone laying claim to a spot within Sennheiser's hallowed 6 series needs to have the chops to back it up, and therein lies the question: Is the HD 620S actually good enough to be *the* 6 series closed back, or has the HD 620S been placed in a series it neither lives up to nor competes with? Let's talk about it.
![Sennheiser HD 569: Sennheiser's Best Kept Secret?](http://headphones.com/cdn/shop/articles/569book.jpg?v=1718687155&width=533)
Sennheiser HD 569: Sennheiser's Best Kept Secret?
A headphone being old and scarcely mentioned doesn’t automatically mean it's bad. In fact, HD 569 might be my favorite mid-fi closed back headphone. Why is that, and more importantly, why does nobody talk about this headphone? Join me as I try a headphone from seven years ago in the hopes of finding an undiscovered gem.
![Focal Azurys and Hadenys Dual Review: The Focal Evolution](http://headphones.com/cdn/shop/articles/Hadenys_and_Azurys_4_083a742b-b75d-4238-b9e7-9b64abe9d130.jpg?v=1717261658&width=533)
Focal Azurys and Hadenys Dual Review: The Focal Evolution
Focal recently announced two new headphones: the closed-back Azurys ($549) and open-back Hadenys ($699). Fc-Constructs gives us a deep dive into their sound and compares them against other benchmark headphones to see where they stand in the market.
![Sennheiser HD 660S2: Strike Two](http://headphones.com/cdn/shop/articles/coversquare_d6fbb11e-224e-4f4f-adad-d5d6fd85a1a7.jpg?v=1715543450&width=533)
Sennheiser HD 660S2 vs. HD 600 and 650: Which is REALLY better?
Sennheiser is the only company that gets the entire headphone sphere excited when they release a new product, but it seems they've forgotten why people love them—and the 6 series—in the first place. Let’s talk about why I think so, how their new HD 660S2 embodies this disconnect, and what I think they can do to fix it.
![Sennheiser HD 490 Pro: Incrementalist](http://headphones.com/cdn/shop/articles/coverbrighter.jpg?v=1709387510&width=533)
Sennheiser HD 490 Pro: Incrementalist
In a world that doesn't include HD 600 or 650, I might actually take HD 490 Pro over most of the other stuff in its price range. While it's not as good as I had hoped, I still found myself using it without EQ for extended periods of time without glaring comfort or sound issues... and frankly, I’m not sure I could do that with most of the other headphones at its price.
![Diffuse Field: Calculate, Characterize, Calibrate](http://headphones.com/cdn/shop/articles/Coolman_c7667d0c-59db-4aae-9a68-c3197e0a7298.jpg?v=1707862938&width=533)
Diffuse Field: Calculate, Characterize, Calibrate
Head-Related Transfer Functions have become a common topic of discussion now that Headphones.com have incorporated the Brüel and Kjaer Type 5128 into our roster of measurement fixtures, but some still aren't sure what HRTFs are, how we're using them, or most importantly—why we're using them. Join listener as they break down the myriad reasons why Headphones.com chooses to calibrate measurements using the Diffuse Field HRTF.
![A Reviewer's Guide to Understanding Graphs - the B&K 5128 Edition](http://headphones.com/cdn/shop/articles/Liric_1_6648ad74-f29a-47b9-bbf2-a9600efabc84.jpg?v=1707863300&width=533)
A Reviewer's Guide to Understanding Graphs - the B&K 5128 Edition
The introduction of the B&K 5128 measurement system heralded a revolution in the headphone hobby with our visualization of frequency response graphs. But how does it compare to the old GRAS standard and how will calibrated graphs improve our understanding of measurements? In this article, we break it all down for you.
![Audeze MM-100: Mid-Fi Mainstay or Missed Opportunity?](http://headphones.com/cdn/shop/articles/4alt2_d19011fe-7ca0-4bb9-a385-e08096a69c5a.jpg?v=1707861713&width=533)
Audeze MM-100: Mid-Fi Mainstay or Missed Opportunity?
MM-100 is advertised to target those who need a solid headphone for mix referencing, similar to what it’s big brother MM-500—as well as the legendary Sennheiser 6x0 series—attempt to offer. But does it do so well enough to be a compelling option in the headphone world's most competitive price bracket?
![](http://headphones.com/cdn/shop/files/accentum_thumb_2_edit.jpg?v=1698713051&width=533)
Sennheiser Accentum Review
Headphone enthusiast Resolve takes a look at the Sennheiser Accentum wireless noise cancelling headphones. Find out if the "baby Momentum" is worthy of its namesake.
![Bass: The Audiophile's Not-So-Guilty Pleasure](http://headphones.com/cdn/shop/articles/Basscover_copy_238fd315-fe0b-4507-88e8-fe0f4c36b0c6.jpg?v=1707862738&width=533)
Bass: The Audiophile's Not-So-Guilty Pleasure
Bass is tough to get right, and it’s crucial to people's enjoyment of music. Many of us have our own take on how bass is best done, but even in acknowledging that preferences may vary wildly: Is there one headphone or IEM that rules them all? Join listener as they explore some of the best, all in search of the answer.
![](http://headphones.com/cdn/shop/files/hedd_1_to_1.jpg?v=1693964550&width=533)
HEDDphone Two First Impressions
HEDD Audio HEDDphone Two unboxing and impressions from Resolve
![](http://headphones.com/cdn/shop/files/1crop.jpg?v=1693251545&width=533)
The Case for Comfort: Why Sound Quality Isn't Everything
Is sound quality really the most important quality of a headphone, or could it be something else? Join listener as they share research and hands-on experience in an effort to answer this question, as well as options they feel excel at a variety of things a headphone user may find important.
![A headphone reviewer's reference gear](http://headphones.com/cdn/shop/articles/resolve_thumbnail_2_c941e883-a18d-4532-84d6-e2a72623a550.jpg?v=1707861677&width=533)
A headphone reviewer's reference gear
Ever wonder what headphones reviewers actually use on a daily basis? In this video, Resolve goes through a list of his reference equipment.