I appreciate your input! Here is the thing IMO, language has nothing to do with music, especially when we are talking analyzing sound. Sound is a universal language, individuals do perceive it differently based on ear anatomy, hearing health and probably some other aspects, but there is no such a thing as a guitar speaking Spanish. I am not sure if you are following what I am trying to say.
In reviews we try to state how the product sounds, what sound performance it has. In that case, a guitar will always be a guitar, no matter what language you speak. The same goes with vocals, if you specify the mark (minutes and seconds) of the part you are analyzing, then there is no confusion to be found, you are analyzing a song and everybody can hear that part. It's about being very specific and stating what you are referring to and analyzing, if you just give a reference track... well that's about 3 minutes of music you just put as a reference... but out of those 3 minutes, what exactly were you focusing on? Language would be much more relevant if you were analyzing the song itself, not the sound.
Sound is a universal language, it also doesn't depend on the genre you listen to, what can affect that is if the reference songs do not have the same characteristics which are present in your genre. E.g. music genres which are more acoustical and raw will probably not have the rumble and boominess of electronic music, in the same way pop music will not have the edge of punk.. so it becomes close-to impossible to cover everything, that's why I think you should stay in your lane and to the music which you listen to, and just analyze it.
Also about source.. that is actually hella hard to get right. Do you use one source or what? I always do my testing with the average product such as a mac or a phone, but if I do use a source I state it with an "update" and mention the differences. Sources are actually a much bigger problem than they seem, there are so many of them out there... and it would be the biggest pain in the ass to re-write your review for each source.. I mean it would really have to be a good product or something else to make you put in that amount of effort. I guess you could stick to the most "popular" ones.. but that still doesn't make things better, because popular doesn't mean good. Maybe just use a source which you believe makes the majority of headphones/IEM's sound better, or when you know it works well with a particular type of product.
Regarding source, I generally try to use at least 3 sources for my reviews. A low powered smartphone/laptop, a DAP, a desktop DAC setup with amping, maybe some USB DAC/AMP dongle stuff. Even some bluetooth dongles like BT20S/BT20 if possible. I even know some reviewers who purposely pair a bright IEM with a warm source, and vice versa to "balance" out the sound. I'm pretty sure this will affect the sound signature to some extent, but I guess as long as it is stated in the review, people who read it will know about it.
I read a survey somewhere (have to go find it) done by some manufacturers globally, and they found that around 80% of music listeners just play the music from their smartphones for IEMs. No amping/external DACs/dongles/DAPs. I think we guys who amp stuff and use dongles/DAPs are the minority actually, so perhaps playing via low powered smartphones is the best gauge for the lay readers in reviews. Though some gear does scale better with amping for sure. Some IEMs eg planars and piezos, do occasionally sound a bit flat without amping.
Yep I agree with you about the language part, certain aspects of rhythm, harmony and melody are universal despite the spoken language. Though language aside, for different cultures, there might be certain fine nuances that we can miss, such as timbre of vocals and timbre of traditional instruments are subjective. Some spoken languages are more guttaral sounding, some languages are a bit less harsher sounding. Will these contribute to sibilance or harshness in the upper mids/lower treble?
Also in my above example of someone who has only listened to EDM his/her whole life, and has rarely heard a classical instrument or traditional instrument, will they know how is the timbre of an IEM mentioned in the reviews?
Other areas in these reference tracks like details, soundstage, instrument separation, imaging, transients, bass speed/decay etc are also all subjective to the listener/reviewer.
But yeah, it would be a bonus to have reference tracks with certain stuff to look out for eg time where this instrument appears etc, and even more ideal if you have a reviewer/headfier you follow who listens to the same music that you do. Though if say a reviewer only listens to one genre of music, and that music is of a different era or not something you usually listen to, I'm not sure how helpful it will be though.
Yeah, it's yet another 1BA + 1DD hybrid, just like KB04. The fun thing is it's apparently tuned in collaboration with Moondrop. Let's see how that turns out. The following is supposed to be the FR graph (IEC-711 coupler)
Actually the graph and driver config looks somewhat similar to the recently released KBear KB04. A bit strange for the company to release something similar in such a short timeframe? But of course graphs don't tell the full story, but if this is a collab with Moondrop, it should hopefully be of a good standard!
Also shoutouts to IEManiac for the suggestion of ASR. I found out that an HP laptop (Maybe not necessarily same model as mine but it is an HP laptop regardless) has a SINAD of 87dB which seems to put it in the complete failure tier of DACs. On the plus side it only needs a volume of 26/100 max for my shorter listening sessions with the BL-03 so the internal amp does not appear to be lacking power, but then again BL-03 is not exactly hard to drive. Is it?
BL-03 is not hard to drive, but with amping, it scales better in dynamics, details and especially the bass tightens. I find the bass has some midbass bleed with lower powered sources, but YMMV.