So here are the fruits of my tinkering over the past couple of weeks in the form of "PMEQ.BIN" file for the PAW Gold.
As I noted immediately above, I was initially negative about the PAW Gold's PMEQ because the presets were so useless. But if you program it yourself for subtle sound tweaks, the PMEQ sound quality is superb.
The PAW Gold also has stunning sound quality but with the caveat that it is a bit too bright in the very high frequencies. I call this high-frequency glare. I think that this is an honest expression of the hardware which is powerful and clean. We have not seen the sound signature change with firmware updates unlike (
cough) some other DAPs.
The problem with the high-frequency glare is that it is (i) fatiguing, (ii) creates a relative hollowing out of the otherwise excellent mids, and (iii) is hard on the hearing.
Here is the solution that works for me:
[No longer online but you can create it from below or, even better, try my new setting in this post.]
This tweak is very subtle and it may not be obvious at first that it does anything at all. In my view, it makes an enormous difference over extended listening. Not to be dramatic...
If you want to try it, download the file and transfer it onto the PAW Gold internal SD card. Then use Settings > PMEQ Management > Import PMEQ to import it into one of the User Settings. You can then rename that User Setting as you like within its settings area. (The PMEQ.BIN files do not retain names.) "LOTOO" works for me since this is now its default sound for my purposes.
Again, this setting is quite subtle. It removes the high-frequency glare while retaining the original sound balance. The PAW Gold's bass is superb and so this PMEQ setting does not touch it at all.
FYI here are the settings.
Lastly, the PAW Gold PMEQ settings also have a GroupGain Filter feature to lower overall volume to avoid distortion for line out use. I only use this PMEQ setting with the headphone out where the digital volume is cumulative - and I don't listen with the volume at 100% (!) - so I have left that GroupGain Filter setting at 0 db. If you are using this with the line out, you will want to set the GroupGain Filter to -2.2 db. However I have not tested this with the line out so I make no claim that it is a useful improvement to the DAC-only sound signature. (It does work equally nicely without and with the NXT-2AK.)