Summary: I was overall unimpressed with the Focal Spirit One cans. I'm hardly a connoisseur of headphones, but I was let down a bit by the sound and the manufacturer's advertising.
I compared these to my reference headphones, which are at the moment a pair of Sony MDR-V6.
Pros: Warm, good bass, feel sturdy, good aesthetics, detachable cable, nice included accessories and case
Cons: Not actually circumaural, cheap cables, overbearing clamping force, highs can be shrill
Summary: The Focal Spirit One really took me by surprise.
A friend of mine praised them a lot so I asked him to lend them to me for a little test.
When I opened Focal Spirit Ones’ case, I found 2 detachable cables, one for smartphones with volume control, and one for normal usage, a 3.5 to 6.3 jack...
Pros: excellent, fast, punchy and well extended bass; lush and present mid-range ; meaty and natural sound ; good treble with no harshness or sibilance ; very fast and energetic sound (excellent PRAT); very good isolation; good overall build quality; excellent for portable use; detachable cables
Cons: the sound is a a little congested; voices could use more texture ; could be uncomfortable for many
Summary: Very good headphones if you want something fun, lively and bassy. I was really impressed at first but with time I started to notice the short comings. Although relatively open sounding the sound is quite synthetic, almost forced.
Excerpt: I do not know if the Focal is a good choice, if only for the lack of comfort. Moreover, these headphones are suitable for a certain type of music in my opinion. A little pricey for what it is.
Summary: The Spirit One's have a nice balanced sound. There is sufficient detail without the sound becoming bright or harsh even at higher volumes. The low end frequencies are controlled and fast but can reach surprisingly deep levels of bass.
Summary: There's no doubt that these headphones sound good and if based on sound alone I would like these headphones. However the two things I think let the focals down are firstly the build and secondly the comfort.
Summary: These are beautiful looking headphones in my humble opinion. I felt a little self conscious when I first wore them on the commute to work, but have had several comments of admiration from other regular commuters. They are a little on the big size, but no bigger than a lot of other brands out there.
Excerpt: Over 1 year now AKG / Sony / Sennheiser / Beyerdynamic What I love the most .... er .... perhaps we did change 3 times and it deserves to be still .... Oh yes, I also love myself realized that
Summary: Just got these headphones for my birthday and they are just fantastic. They may not be as good as the AKG's that are a similar price but those things are huge and completely impractical because of their size and also lack a mic for mobile phone use.