Brief comparison of devices I tried lately:
LG V60,
LG V50,
Spectra X (portable usb dac),
Qudelix 5k (portable bluetooth+usb dac),
Meizu USB DAC Pro (portable usb dac), and my old devices:
LG V30,
Meizu Pro5 (HiFi Phone)
Compare in terms of: Bass quality, Fullness, Balance, Resolution and details
LG V60 (US hw model, US Cellular firmware)
Bass quality 10
- The best I have heard, very realistic. All types of drums sounds realistic and energetic. And able to move quite amount of air, never had this kind of experience with my all BA IEM (64 Audio U12).
Fullness and tone 10
- Full sounding from mids to lows, and tone is natural and realistic everywhere.
Balance 10
- From highs to lows are quite well balanced, satisfying and fits all music genres.
Resolution and details 9
- Maybe the highs could be more airy
Overall: a huge league above other LG hifi phones. And also better than other hifi phones, portable dacs.
Looks like the design of ES9219 works, based on ES9218 with extra circuit to remove the need of custom tuning. I am not a fan of custom tuning.
(attention: need to make sure the jack is in 'normal audio device mode'. more than 50% chance it detected my IEM as external device, and the sound is bad.)
LG V50 (V500N Korean model hw and firmware)
Bass quality 5
- Bass drum doesn't sound realistic. And there is an area of bass frequency that is blurred.
Fullness and tone 6
- Sound characteristic is like many Japanese portable audio devices. The mids and bass are not full, I don't know how to describe this, it sounds 'small and sweet', instead of 'big and bold'. I feel that the sound is intentionally tuned to be like this (to fit asian market?).
Balance 8
- Not bad, slightly bass light.
Resolution and details 9
- Very good resolution and details, except the area of blurred bass frequency. otherwise it will be 10.
Overall: the dac chip is good. the but the tuning is not for all audience, not for all types of music.
Spectra X
Bass quality 8
- The transparency and amount of bass is great. However kick drum lacks density and realistic-ness, I can hear it, but can not feel it.
Fullness and tone 9
- Great, full and warm. Not as 'energetic' and LG V60. Driving power is better than other phones and portable dacs.
Balance 10
- Great, enjoyable
Resolution and details 9
- Great.
Overall: the best portable usb dac I have tried. the only little issue is the density of an area of bass.
Qudelix 5k
Bass quality 9
- Great.
Fullness and tone 6
- Not full, on the lean side, especially in the lower mids area.
Balance 9
- Okay, on the lean side.
Resolution and details 10
- The best of all of these I have tried. So fast, so detailed!
Overall: maybe that's due to the limitation of power, as a battery powered small bluetooth device and need to have long operation time. It is a great device given the limitation. But not for me, if all portable bluetooth DACs are like this, then I will not buy any of them in the future.
Meizu USB DAC Pro
Bass quality 9
- Great.
Fullness and tone 9
- Great, and alot of driving power.
Balance 8
- A little bit too much bass
Resolution and details 7
- Not as detailed as others.
Overall: Main issue is detail,resolution, and a little bit too much bass. But given the price, it is the best value.
LG V30 (Tmobile edition, no special sound tuning)
Bass quality 9
- Great, but not as good as V60
Fullness and tone 8
- Good, but not as good as V60. V60 is more 'realistic' everywhere.
Balance 9
- Good, a little on the lean side.
Resolution and details 10
- Great, I tend to think it is more detailed and more airy than V60.
Overall: Without special tuning, the sound is better.
Meizu Pro5
Bass quality 9
- Great, but not as good as V60
Fullness and tone 9
- Great, but not as good as V60. V60 is more 'realistic' everywhere.
Balance 10
- Great
Resolution and details 9
- Great, not as good as V30
Overall: Very good. I like it more than all other phones, except V60.
Side notes:
I have tried several phones with 'big audio brand' tuning, including LG V20 B&O edition, LG V50 (Meridian tuned), Meridian USB DAC, Meizu Pro5 special firmware versions which has audio algorithms tuned by 'famous musicians'.
After some time I either returned / sold them, or flashed firmware back to 'stock' edition. Because the sound got special unnatural treatments here and there, make the device not suitable for all types of musics and headphones.
I don't know why, I can only guess, these big brands or musicians have their special types of favorite music, and their special headphones. they tuned the dac based on their special artistic perspective.