Thanks, if Spring 1 is sufficiently discounted on 11/11, it will be my number one priority to purchase.
Though I read a lot of equivocal things about the Spring 1's bass. I know you are very particular about bass, what do u think of it?
to be honest, the bass was a mess OOTB, they need to be tighten up with burn in, at least 100 hours (i cant tell exactly how many hours to make a differences, but i guess 100 hours is enough). Then because the bass part are quite big, you need to get correct tips (get the wide bore one with short nozzle so they only overlap a bit with IEM nozzle end so the eartips dont make resonance chamber. Stock reference tips is good if you can get decent seal, but unfortunately for my big canals, they were too small, I had to search and opened boxes of eartips. I found 1 that I can get decent seal.
From this point, the bass will be at their best scene (burn in + correct eartips) :
-With decent seal you get the subdue subbass, they are more heard, and quite big rumble, not as much as Kanas Pro but decent enough (not for bassheads)
-articulation and texture is very good, not great, but very good, better than Kanas Pro, similar to BLON
-Decay for a big 13mm drivers are on fast side although not as fast as BLON, but definitely faster than Kanas Pro, similar to No 3 in terms of decay
-mid bass bleed still there by little bit, can be bloated on some tracks with big mid bass mixing, particularly on 80-125khz, roughly there (if you use small bore eartips and long nozzle eartips that make resonance, that frequency will be bloated and caused a mess)
-Quantity wise, subbass below BL-03 level, the mid bass around the same, so basically their mid bass is a little bit bigger than sub bass aka sub bass rolled off from 30hz below.
-To be frank Bass is an area where Spring 1 dont excel with, but dont get wrong, they are not that bad, previous BQEYZ have sub bass roll off, and bigger mid bass, and in Spring 1 they already improved. They are above average, just not that great and can be bloomy on some tracks. Edit : perhaps I need to say, they are above budget class quality, to avoid confusing.
Bass is very good quality, not quite the quantity I was expecting from a 13mm DD. Attack and decay doesn't sound like a 13mm DD so the magnet must be very strong.
Similar, but smoother. It's a level up with caveats (power and volume)...
I'm still trying to find an analogy that works. It's like in astronomy when you put a filter on your telescope to study the sun or moon. They're dampening the BA and piezo so that you can really put power into them and hear them without any shrillness and without torching your eardrums. But to do so well, you need a lot of power and signal strength.... The detail can be incredible at high volume but a bit lacking at low volume as the warmth drowns it out.
You need to have power and listen at high volume to use these to their potential. If not, at lower volume and/or power, the bl-03 is going to sound as good or better.
I agree, they are very smooth and balanced that you can crank up the volume without any certain frequency kill your ears. Actually not so many IEMs can have this situation, and so many IEMs will stab your ear with 3khz peak on high volume. If you can listen in high volume, you will hear more details, and higher frequency will resonance more so they will be louder while lower frequencies will be on linear with volume level. So this Spring 1 wont be great to be listen in low volume, but they will shine on higher volume level.
