""Let’s talk about these S4X headphones I received from Ollo Audio... The first thing we have to appreciate (in my opinion) is their appearance they’re gorgeous. I love the choices in materials, especially the walnut wood and how it contrasts against the black metal bits. The self-adjusting strap is also a wonderful approach which no longer requires fidgeting with clicks or stops on either side to get the right fit. The cans themselves are not specifically left and right, rather how you plug the cable in decides which is which.
Putting them on, they are quite comfortable and as mentioned getting them “into position” is a breeze. The earcups are very supple and comfortable no complaints there. These can easily be worn and used for extended periods, they are quite comfortable overall and not what I would consider heavy on the head whatsoever. It’s worth noting the metal headband has a bit of a resonant “ring” to it when jostled. Using a headphone headband wrap stops this issue. Before we talk sound, it’s important to note that my preferences for headphones require that they must work without any sort of eq or corrective software; I want to be able to just plug them into whatever, trust the sound and go.
As far as listening to the S4X, I would say these fit what I would desire for a “target curve” for the most part. That target being a bit of an elevated low-end response, flat mids and then a slight HF boost though not as drastic as the low-end boost. To be picky, I’d say the low-end boost on these extends just a bit farther up into the midrange than I would prefer, and the highs are ever so slightly “hot” for my tastes (around 10khz ish). That being said, my Oppo PM-3 are a bit relaxed in the highs so I welcome a more “open” view into that range via the S4X comparatively. Also worth noting that Ollo provides a unique frequency response graph for your pair in the box which is a nice touch.
I’m not a fan of the idea of heavy, $1-2k cans which require software to sound good. For what you get in the S4X, I’d pick them over those more costly options any day."
Eric Mitchell is primarily a mixing and mastering engineer with multiple Billboard top 20’s as well as 3rd place out of over 600 engineers worldwide in the MWTW Dream Studio engineering contest in 2019. He is also a producer, artist, songwriter and multi-instrumentalist.