Well greetings and thanks for clicking on this thread.
I bought these ear buds after spending 2-3 hours in Jaben testing out various ear buds for something that sounds similar to my first-generation MylarOne X3.
Well, I finally decided to settle for this C351 after a quick run through the various tracks on my phone’s memory ( and yes, I actually sampled them ear pieces on my Nokia E66 via a 2.5mm-3.5mm jack converter today. ) Now that I’m at home with my proper setup, I can give a better review of these ear buds.
Some tech specs that I was interested in.
Drive units, ø 9 mm Neodymium magnet.
Input impedance, 17 Ω/ohms.
Sensitivity, 110 dB/mW.
Frequency response, 20 - 21,000 Hz.
There seems to be quite a smattering of external sound seeping into my music. Not really good, but after reviewing the technical specifications on the Denon website, what I discovered is:
“Equipped with Denon’s exclusive Acoustic Optimizer technology, which balances sound pressure on both sides of the diaphragm”
Now what means is that it’s a “open” style in ear bud. I’m sure that its port is rather quite large as it actually runs around almost the entire circumference of the body itself, via observation.
I might seal them up in the future with some silicon but till then, that port, is what I feel is letting in some outside noise. Theoretically, this might mean that these earbuds would have good bass response, compared to my (currently broken) BeyerDynamic DJX-1 and my previous Audio Technica ATH-A700 headphones which are both closed style headphones..
For my short write-up, I’m wearing them with Ultimate Ears soft silicone eartips. Its been my long running favourite for it provides my perfect personal balance between isolation and comfort.
On with track list:
Globus - Sarabande Suite (Aeternae)
Ludacris - The Potion
Audioslave - Like A Stone
Party Animals - Have You Ever Been Mellow
Alphazone – Rockin
The Offspring – Trust in you
Avenged Sevenfold - Trashed and Scattered
Sonata Arctica - The Vice
All I have to conclude so far: These earbuds –are- indeed as bassy as my DJX-1 with some loss of control in the low end when it’s really heavy (such as in “The Vice”). However, what I feel that these earbuds really shine is in the dance/trance genres especially when the bass is punchier rather than drownier. At no point in time during my brief test did I find the bass so overpowering that it drowned out the rest of the music, however I do have a slight beef with the way it delivers the low end with certain genres. Eg: sometimes the bass drum comes across as a “BLOOP!” rather than a solid thud.
I would had liked it if had a better mid range presence especially when the music I listen to really depends on what mood I’m in. They didn’t fare too well with Sarabande Auite and Like a Stone, but their good side is that the trebles are quite smooth, but then they are let down by what seems to be a muted mid range. Between the mids and highs though, they were as good as my old X3’s.
If your favourite artists are female, this might not be the earbud for you, unless you don’t like today’s shrilly pop queens. But I like that, it’s a mellow earbud for a jolly mellow dude.
