The discovery thread!

[lushmelody]

https://arstechnica.com/gadgets/202...ill-leave-lightning-behind-in-future-iphones/

Apparently rumors have legs.

Well, they are doing only because of EU legislation. Apple is the most anti universalization of anything

 

[AmericanSpirit]

Well, they are doing only because of EU legislation. Apple is the most anti universalization of anything

Steve Jobs was SONY lover…and we know SONY had those anti-universalization ideology

 

[lushmelody]

Steve Jobs was SONY lover…and we know SONY had those anti-universalization ideology

Yeah, it made sense back then when consumer legislation was weaker

EU sometimes overcomes the corporate lobby and does progressive consumer rights. Pretty important for these times that prices are rising and there is also an enviromental danger context

 

[RetroE83]

Steve Jobs was SONY lover…and we know SONY had those anti-universalization ideology

Off topic, I have a few 80s Sony turntables (Sony PS-FL77, PS-X555ES, PS-LX5) with remote control module add-on option. I bought one (RM-40) thinking that the connectors would be cross compatible, but they’re not. These turntables are only within 4-5 years apart.

 

[Nimweth]

Nice to welcome you Nimweth! Whether you think burn-in is a thing or not, I highly recommend what TRN suggest on their product instruction paper!

I’d never say “never” because I know we only know so little about ourselves and about nature and science. We found Birds can physically “see“ earth’s magnetic field thru their eyes, and without being proved on human, we technically may “hear” temperatures in an open spaces.

Folks from Tsukuba University conducted a study of “Spatial temperature distribution measurement system using acoustic methods".



I do hear pretty significant differences of pre-burn in and post burn-in TRN X7, which is very rare on any BA IEM, but I can’t deny things I tested, so yes the burn-in for X7 is recommended.

Don’t be discouraged by initial out of box performance. Many gave up there and leave “worst IEM ever” comment and never give it a second chance, especially for busy reviewers being given a free sample.

Feaulle H570 ear tips is highly recommended to pair, it opens up air and lowers bass floor to neutral line.





Cooking recipe for X7;
Playing : pink noise

or your general playing tracks
Duration:
▶︎[prelude] 24 hours of 1/3 of general listening volume
▶︎[interlude] 24 hours @ 2/3 volume
▶︎[allegro] 72 hours @ normal volume
▶︎[prestissimo] 24 hours @ 1.33x of normal volume

It’s a 144-hour long debut show of X7. Need some breaks during the show, but after that X7 will be very reliable instrument to play with.
debut of X7

You certainly do not need to convince me about burn-in. I have owned over 100 different IEMs and always leave them running for around 100 hours before testing or reviewing. In some cases the change can be dramatic. It is generally the case that BAs show a lesser improvement after burn in than DDs but that is not always the case. After all, a BA is still a mechanical device with moving parts and will benefit from "running in". They often improve in smoothness and extension as well as a reduction in "BA timbre". This occurred quite recently for me when I bought the KZ AS12. I use the Ayre Audio disc and the Densen Demagnetiser Disc plus the Isotek algorithm, as well as a wide range of music from different genres.

 

[AmericanSpirit]

Just confirmed Truthear SHIO USB dongle DAC works fine with my old personal laptop (Alienware m15 Windows 7) thru old USB port, and current personal laptop (ideapad gaming Windows 10).

Both works fine!

 

[Nimweth]

See edit above.

 

[nraymond]

This is news to me. If they do I hope they replace it with something more universal like USB-C, but highly unlikely.

In October of '22 "COM(2021)547 - Proposal for a Directive amending Directive 2014/53/EU on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment" was approved by the EU Parliment, with a deadline of 2024 for all manufacturers selling things like phones in the EU to include a USB-C port. Apple will not be releasing phones with both a USB-C and a Lightning port, so expect Apple to switch to USB-C on all their phones over the next couple of years.

 

[nraymond]

Well, they are doing only because of EU legislation. Apple is the most anti universalization of anything

A lot of people felt Apple went too far when they adopted USB-C for everything on their MacBooks and did away with other ports, which is about as extreme "universalization" as you could get. I think Apple felt Lightning was better (and it used to be significantly better than other USB ports before USB-C was introduced, people forget how bad Micro USB and Mini USB ports were). But at this point whatever minor advantages Lightning has over USB-C, there are greater advantages for society to adopt USB-C as the standard.

 

[AmericanSpirit]

QoA Vesper Grey: Purchased at $49 + tax on Aliexpress

Outlooks is very good

Sound impression:

▶︎out of box performance for dynamic woofer is a very traditional DD, very muffled and probably need to go through burn-in process

▶︎the 3khz peak is very subtle as most of mid-floor gain level is almost flat low which makes Vesper a almost very neutral IEM with sub bass lift and some diffusion field emphasis. For a $50 IEM Vesper is nicely tuned, Except a little bit bother some mid bass of the dynamic driver. I think I will pair with H570 later.

▶︎With H570 ear tips, I could lower the bass floor to the HEXA’s stock tuning level, pretty satisfactory floor. While mid and upper being added transparency, and more sense of space, I guess H570 scored another victory on pairing. No signs of sibilance, the lack of air is improved a bit, tonally very neutral. In terms of tuning alone, disregards the driver’s physical limits, Vesper with H570 is pretty much a great IEM hard to nitpick! Maybe not for vocal lovers as most of mid are not emphasized liked harman.

Overall it has good note weight balance, warmer signature, slightly U-shape tuned due to the 3khz little peak, but fairly neutral overall. Sound density is what you can expect 1BA+1DD, nothing special it just sound about right.
I will burn in the dynamic driver to see how Vesper will perform. Right now my impression is “Ok, not bad! Nicely tuned as warm-neutral with weakness in lack of air“.

Technicality wise, it’s just 1BA+1DD, full orchestral sounds pretty limited, and resolution is very average or due to less emphasis, maybe lower than typical harman styled ones, Vesper is an IEM properly tuned, has decent Knowles tweeter, and comes with premium carrying case.

I feel Letshouer’s Galileo would be an interesting one to A-B test with Vesper as they both have the same components, with Vesper (traditional DD+1 knowles), Galileo (LCP DD + 1 Sonion).

 

[InvisibleInk]

In October of '22 "COM(2021)547 - Proposal for a Directive amending Directive 2014/53/EU on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment" was approved by the EU Parliment, with a deadline of 2024 for all manufacturers selling things like phones in the EU to include a USB-C port. Apple will not be releasing phones with both a USB-C and a Lightning port, so expect Apple to switch to USB-C on all their phones over the next couple of years.

"The needs of the many outweigh the needs of the few or the one"

 

[AmericanSpirit]

TRN Xuanwu (Bellsing SPD + Bellsing tweeter BA) purchased at $24 from TRN official aliexpress.

It comes with TRN T-tips (M)! Nice.

▶︎To my experience planar drivers are less sensitive to burn-in and this Bellsing SPD seems following the same traits

Sound Impression:

▶︎tonal balance wise it’s V-shaped. The TRN-V we know very well, and first thing I noticed is it sounds very fast! Wow, Bellsing has done a good job for SPD!

▶︎What I don’t like is the well known Bellsing BA-tweeter timbre, is very present. I think the BA tweeter is located very close to the nozzle outlet… KZ tackled with BA timbre by intentionally drop 4-6khz by jaw dropping 10db on new ZS5, but TRN says “no, we don’t want to dip! “ . You can see coupler’s internal resonance peak at 8khz is noticeably higher than other IEMs, it indicates the BA tweeter location is either in the nozzle or Pretty close. Even N5005 suffers from this BA timbre with several ways to deal with, TRN took imaging projection over timbre.

I may try some treble tame ear tips, as well as some cable roll to tune Xuanwu. Stock tuning is a bit too much for my preferred ones.

Overall I’m quite impressed with Bellsing’s Square Planar, maybe in the future we could see some better implementations with different tweeter combinations. SPD is a thing that sounds very planar and enjoyable, another Bellsing’s effort that crystalized.

Some FR cross comparison, HEXA as reference tuning.

 

[Leonarfd]

That 8k peak looks like ear bleed, might be a ok set for the treble deafened older peeps out there.

TRN Xuanwu (Bellsing SPD + Bellsing tweeter BA) purchased at $24 from TRN official aliexpress.


It comes with TRN T-tips (M)! Nice.


▶︎To my experience planar drivers are less sensitive to burn-in and this Bellsing SPD seems following the same traits

Sound Impression:

▶︎tonal balance wise it’s V-shaped. The TRN-V we know very well, and first thing I noticed is it sounds very fast! Wow, Bellsing has done a good job for SPD!

▶︎What I don’t like is the well known Bellsing BA-tweeter timbre, is very present. I think the BA tweeter is located very close to the nozzle outlet… KZ tackled with BA timbre by intentionally drop 4-6khz by jaw dropping 10db on new ZS5, but TRN says “no, we don’t want to dip! “ . You can see coupler’s internal resonance peak at 8khz is noticeably higher than other IEMs, it indicates the BA tweeter location is either in the nozzle or Pretty close. Even N5005 suffers from this BA timbre with several ways to deal with, TRN took imaging projection over timbre.

I may try some treble tame ear tips, as well as some cable roll to tune Xuanwu. Stock tuning is a bit too much for my preferred ones.

Overall I’m quite impressed with Bellsing’s Square Planar, maybe in the future we could see some better implementations with different tweeter combinations. SPD is a thing that sounds very planar and enjoyable, another Bellsing’s effort that crystalized.

Some FR cross comparison, HEXA as reference tuning.

 

[Kamikaze777]

TRN Xuanwu (Bellsing SPD + Bellsing tweeter BA) purchased at $24 from TRN official aliexpress.


It comes with TRN T-tips (M)! Nice.


▶︎To my experience planar drivers are less sensitive to burn-in and this Bellsing SPD seems following the same traits

Sound Impression:

▶︎tonal balance wise it’s V-shaped. The TRN-V we know very well, and first thing I noticed is it sounds very fast! Wow, Bellsing has done a good job for SPD!

▶︎What I don’t like is the well known Bellsing BA-tweeter timbre, is very present. I think the BA tweeter is located very close to the nozzle outlet… KZ tackled with BA timbre by intentionally drop 4-6khz by jaw dropping 10db on new ZS5, but TRN says “no, we don’t want to dip! “ . You can see coupler’s internal resonance peak at 8khz is noticeably higher than other IEMs, it indicates the BA tweeter location is either in the nozzle or Pretty close. Even N5005 suffers from this BA timbre with several ways to deal with, TRN took imaging projection over timbre.

I may try some treble tame ear tips, as well as some cable roll to tune Xuanwu. Stock tuning is a bit too much for my preferred ones.

Overall I’m quite impressed with Bellsing’s Square Planar, maybe in the future we could see some better implementations with different tweeter combinations. SPD is a thing that sounds very planar and enjoyable, another Bellsing’s effort that crystalized.

Some FR cross comparison, HEXA as reference tuning.

Hi! You can try to cover 80% of the nozzle with micropore tape - will tame the peak a little or you can try to remove the ba- take down the grill and you can reach it(just an idea, i did NOT tried) . Or also you can put some foam under under the grill.

 

[AmericanSpirit]

That 8k peak looks like ear bleed, might be a ok set for the treble deafened older peeps out there.

If it was LCP driver’s timbre, I’m ok with that but Bellsing BA’ has very hard to deal with timbre that is associated with. KZ knows well and doing good job taming it, TRN did good job for X7, but for Xuanwu they went usual aggressive tuning I guess.

This shall work for matured audiences as you mentioned