Hi there,
So, I suppose I should say something in response, as a forthcoming reviewer of the DX160..
I wrote a review for the DX220 too, and in it, I made a disclaimer along the lines of:
"I am something of a Luddite when it comes to DAPs; I have never in my life used bluetooth and I don't use streaming. I put folders of music onto a micro-SD card and am looking for the DAP which can make that music sound as good as possible". UI speed and responsiveness are a factor of importance to me only if they are significantly affecting my ability to select songs and move between folders etc.
I don't use any bluetooth audio products and frankly would have little idea how to do so even if I had any.
I should add that I never make any claims in my reviews concerning Bluetooth/Wifi performance - I make it clear that I lack both the gear and the knowledge to do so.
I do however post links to the relevant product threads on Head-Fi (in addition to the manufacturer's webpage) and encourage readers to go there to check on the latest discussions about the DAP's technical performance (Bluetooth, wifi, streaming et al) and whether there have been developments/updates - for example, ones that may have occurred since I wrote that review.
As such, I'm not misleading anyone.
So, do these factors disqualify me from writing reviews of audio products?
I hope that I have developed over the years some ability in being able to analyse sound signatures of audio products and the differences that occur when other products (cables, IEM's, DAPs, Amps etc) are added to the 'audio chain', and the ability to communicate these in writing in a way which is accessible to the newbie and of value to the more experienced audiophile too.
Some people have been kind enough to message me upon occasion and tell me that they have found my reviews helpful in choosing - or not choosing! - a product I reviewed.
I'm certainly far from outstanding though, and I strive continually to improve my craft.
And here we come to a significant point: there are many people out there (and on here), who are looking to use a DAP solely in the way that I do.
As such, the Bluetooth performance of the DAP is of no interest or consequence to them.
I imagine such a person might find some value in my reviews.
There are some who might disagree with the way in which I assess sound signatures and audio performance.
They might prefer a more frequency-based analysis, such as the graphical representations of
@crinacle or the inclusion of frequency analysis of someone with sound engineering experience like
@Deezel177
Both of them provide a wonderful service to the Head-Fi community. Some may prefer the methods, style and preferences of Hawaii Badboy or the thoroughness and professionalism of
@twister6
I like to hope that there is room for all of us, including those whose with whom I disagree, so that people can find reviewers who match their preferences and grow to trust their input, and that we can all appreciate each other's contributions - yours included - without any need to attack each other or criticise beyond that which is healthy, constructive and beneficial to the community.
It's evident that you are - very reasonably - frustrated and unhappy with both the issues you've had with the DAP and with how you maybe perceive others as handling such issues.
I would - in only a constructive spirit - suggest that letting those frustrations boil over to the point where you start giving somewhat sneering labels (e.g. 'purists'), calling into question reviewers and their integrity/worthiness to review, and giving in to an 'us vs them' approach is going to hinder, rather than help in us all making progress on this issue.
You've already helped a lot by raising the issues you've been having in the first place, and asking appropriate questions.
You're persistent in trying to find a resolution and answers for yourself and the rest of the community who might be considering this DAP, and that's absolutely to be appreciated.
Perhaps a tech-savvy reviewer could be identified who is known for a preference for Bluetooth, streaming and so forth, and a review unit provided to them?
I myself live in London, as you seem to as well? I have ongoing health issues, but if health permits, I would be happy to meet you and let you try out your gear on my DX160, if you feel that would be helpful?
We could then feed back any results to Paul and the team and see if that can help them in identifying causes and finding solutions.
Just some thoughts, and I hope you will take them in the constructive spirit I intended