FLC Technology FLC8 and FLC8s Impressions Thread

[csglinux]

Today I have got my spinfits delivered to me after almost 17 days. Currently listening to these while typing this post.

These are easily the best upgrade one can get without upgrading to a more expensive iem. Mids are the most noticable upgrade while some treble hotness is adjusted. Bass is like i have added red sub bass plug on top of black bass filter. Bass character is completely changed. Details are next level now.

I advise s size for a deep insertion. Comfort and isolation is much better now like it has completely disappeared from my ears.

Thanks to @csglinux for advising me this.

Glad you like them!

P.S. Are you using the regular SpinFits, or the new dual-flange tips?

 

[Nalin]

Glad you like them!

P.S. Are you using the regular SpinFits, or the new dual-flange tips?

Just the regular ones..

https://imgur.com/6wsYDdn

 

[csglinux]

The dual flange sound a bit more like foam. They take a little off the top end, but isolate better. They're both excellent eartips

 

[Nalin]

I am thinking of getting dual flange now. I still can't believe how come details have increased so much but i think it is because of treble which is sizzling right now, lol.

Either i have made a mistake of getting s size or i should have gotten a dual flange. But if s size can increase bass so much i can't imagine what m size will do. But that will have treble in control too.

 

[csglinux]

If you want more extension past 10 kHz, then the original SpinFits are better. If you feel the need to tame the treble and get better isolation, then the dual flange SpinFits are the way to go.

 

[Nalin]

Does dual flange have less details then regular one? I remember that foam suppress some details too. I hate that damped sound of foam.

 

[csglinux]

Does dual flange have less details then regular one? I remember that foam suppress some details too. I hate that damped sound of foam.

Yes, you'll most likely hear less treble extension as a slight loss of detail. In some headphones with very good high-frequency extension (e.g., KSE1500) that might be a blessing. Most multi-balanced armature (or mixed BA/dynamic) headphones tend to roll-off at or around 10 kHz, so it might not be ideal. It depends on your preferences and//or sensitivity to treble.

The curious thing about these dual flange SpinFits is just how much they isolate and sound like foam. If anybody likes the sound of foam tips, they're worth checking out. They aren't cheap, but foam tips need replacing regularly; these are silicone, so they should last a lifetime.

 

[Nalin]

I hate how foam sounds but i almost love how triple flange sounds. Triple flange suppress treble and bass but has almost no effect on mids.

Thinking of getting cp 240 s now.

 

[csglinux]

I hate how foam sounds...

Thinking of getting cp 240 s now.

Ok, but just be warned... The CP240's sound basically like foam!

 

[Nalin]

Ok, but just be warned... The CP240's sound basically like foam!

But it does not affect mids right?

 

[robervaul]

FLC8D & FLC9 according to this post => https://tieba.baidu.com/p/5453638253

FLC8D
Audio fixed
sensitivity: 107dB / mW @ 1kHz
Frequency response range: 20-20000Hz
Monomer: 8.6mm Dynamic single element x1, balanced armature monomer x 2
Impedance: 11 ohms
Line length: 1.2m
Terminal: 3.5 mini-jack L-type terminal

FLC9
fixed at low frequency, high frequency adjustable 12 modes
Aluminum alloy cavity
group resistance: 20 ohm, zero sensitivity: 105dB
Line length: 1.2m
Wire: 7N single crystal copper

 

[dlayman]

FLC8D & FLC9 according to this post => https://tieba.baidu.com/p/5453638253

FLC8D
Audio fixed
sensitivity: 107dB / mW @ 1kHz
Frequency response range: 20-20000Hz
Monomer: 8.6mm Dynamic single element x1, balanced armature monomer x 2
Impedance: 11 ohms
Line length: 1.2m
Terminal: 3.5 mini-jack L-type terminal

FLC9
fixed at low frequency, high frequency adjustable 12 modes
Aluminum alloy cavity
group resistance: 20 ohm, zero sensitivity: 105dB
Line length: 1.2m
Wire: 7N single crystal copper

Just guessing, but seems like the 8D should be less expensive than the 8S due to lack of tunability. I wonder if it's a tuning based on one of the 8S combos. Still probably wouldn't sound exactly the same.

The 9 is probably more expensive than the 8S, due in part to the aluminum shell, and also the more advanced tuning mechanism, although it only affects the non-bass regions.

These look interesting, but I'm not seeing a clear upgrade to the 8S. The 8D could be a great lower priced option to get the FLC sound, and the 9 might also be a good option for someone who is able to spend a bit more and doesn't already own the 8S.

Celeste seems to have gone quiet. It's a very complex design.

 

[robervaul]

The low frequency is not adjustable, a little bit disappointed
I hope that FLC has used a high quality DD as well as Oriolus

 

[dlayman]

The low frequency is not adjustable, a little bit disappointed
I hope that FLC has used a high quality DD as well as Oriolus

Although it isn't directly adjustable, the perception of the low end will be affected by the adjustment of the other frequencies. The ability to fine tune them in 12 ways is pretty great, allows for much more subtle adjustments to the sound. The lack of low end tuning I don't see as a huge problem and it would dissuade me from the 9.

 

[csglinux]

But it does not affect mids right?

I'm sure, to some extent, everything gets affected But these tips have most impact on the upper range. It's common when we measure IEMs to normalize around an overall sound-pressure level or SPL at 1 kHz and you're effectively doing the same when you adjust your volume to a comfortable listening level. In this case, yes, your mids are hardly affected at all, and what you'll experience is a warmer sound as a result of a more rolled-off treble. Here's a comparison of the regular SpinFits vs the new Dual Flange SpinFit on the SE846:

https://www.head-fi.org/threads/shure-se846-impressions-thread.675219/page-1220#post-13807144

I've not yet measured these on the FLC8S, but I'd expect the same trend.

If you know what foam tips sound like, you pretty much already know what the CP240 tips sound like