Originally Posted by yangian
Well, depend on what You will compare to. It still has more bass quantity than ba drivers. Fit is their real problem. I'm luck it can fit me ears!
Well I have to agree with yangian, I too really like the UiiSii Hi-905. I will try to describe what I hear from these earphones so you can decide whether they fit your preferences.
First fit was difficult but once I figured it out I found them to be very comfortable. I had to use a larger than normal tip, I usually find the large KZ starline tips work for me but had to use a larger tip with the Hi-905. I insert the earphone with the cable down and twist the bottom up while pushing in a little and stop when the cable is about at the 8 o'clock position, this seem to seat the tip deeper in the ear canal. I then run the cable over my ear. By doing this I was able to get a good seal that produced the best sound.
I would classify the sound signature as balanced and tending towards neutral. Other earphone that I own that I would classify as having a similar signature would be Vivo XE800, Havi B3 Pro. and BYZ K17. As for headphones I would also place the AKG Q701 with this list.
I don't think many people have experience with the BYZ K17 so I will compare the Hi-905s to the XE800 and B3 Pro.
Like the XE800 the Hi-905 is well extended and provides crisp detailed treble. With the Hi-905 the notes in the treble seem to be a little thicker resulting in a richer sound. I believe some would consider both these on the bright side and I did have to burn in the XE800 for over 400 hrs. to get the treble to where I like it and I think I am quite treble tolerant. On occasion I notice the XE800 to be sibilant but I have not noticed this with the Hi-905.
I find that the treble on the B3 Pro is not quite as extend and although it is detailed it lacks the crispness of the XE800 and Hi-905. The B3 Pro would be the best choice of the three for anyone who is treble sensitive.
As far as bass the Hi-905 is very similar to the tight punchy bass of the XE800 however the Hi-905 has more sub bass.
The bass on the B3 Pro is not as tight or punchy as either of the other two. I find that the amount of bass is very similar on all three but I prefer the punchier bass on the XE800 and Hi-905
All three of these earphones do a good job on the mids and as say I find them to balanced so the mids are not forward or recessed.
The B3 Pro is known for a wide sound stage and I find that the Hi-905 equals the width of the B3 Pros sound stage. Both these earphones have a wider sound stage than the XE800.
What sets the Hi-905 apart is in the positioning of instruments they have height, layering and a forward dimension. 1clearhead referred to this as a holographic effect and what I find it does is provide a sense of space and openness that I have not found with any of my other earphone.
So if you like big extended bass, then yes, you will find the bass on the Hi-905 lacking. If you are treble sensitive you will probably find the Hi-905 bright. If you prefer a balanced earphone that is neutral, you will likely like the Hi-905. If you are like me and are looking for a headphone that has something that sets it apart from the others in your collection, then the holographic effect might be that something.
I have been using the Hi-905s for over a month now and like them more and more with each listening session. Do I like to throw on a bassier pair periodically, yes I do, but I find the Hi-905s best suit my preferred sound signature.