General Information


High purity silver/ 8 shares
CNC metal splitter/ chin slider
Gold plated plugs

Latest reviews


Headphoneus Supremus
Organic silver
Pros: Very good build with flawless braiding
Excellent soundstage expansion
Improved imaging thanks to better separation
Smooth delivery across the range
Good quality carbon termination and splitter
Tight slider stays in place
Color coded left and right
Cons: Cable weight and no preformed ear hooks makes it a better at home option than on the go
Product Page :
Official Distributor’s page :
Price : 199$​

I discovered the ISN brand when I had the chance to review the sales hit ISN H40 IEM which boast fantastic value for money. When I had the opportunity to review their 8 strands pure silver cable the AG8 I couldn’t pass up on the opportunity to write my first cable review. I actually spent a lot of time (200+ hours) with the AG8 before finally getting to write this, with a lot of different pairings.

Build, ergonomics and comfort
The AG8 comes in a relatively simple package not unlike the H40, but given the amazing value for money they provide the interest is in the product itself rather than the packaging.


The build quality is great and the braiding of the cable is flawless and quite beautiful. ISN doesn’t share much on the strands nature, the manufacturing process, gauge (but I’d say 24 AWG comparing to other cables I own), geometry or even source of the material like some cable makers other than it’s high purity silver. The cable sheathing color, giving somewhat of a golden brown color is very classy. The carbon splitter and termination feels sturdy with classy golden touches. The plug is gold plated as it should be in this price range.


I have a 2 pin version of the AG8 and I was happy to see that it works with all my recessed IEMs and CIEMs as it can sometimes be an issue. The pins also fit every of my IEM with no extra force needed which is always something I am wary of (my DITA Oslo comes to mind, fits only a small share of my IEMs pins are too fat). The AG8 is neither loose nor tight and fits everything nicely.


Worth noting the blue and red color is something often missing on cables forcing you to check hard to read markings, not the case here with clear color coded markings, kudos ISN here!


On to the slider it’s built to either sit nicely with the splitter, note that it’s fairly tight which is good because it sits securely when you slide it up, on the flipside it’s not easy to slide and I was careful along the way not to slide it too fast. The slider is important ergonomically especially with universal IEM since the cable weight is felt (by nature of it’s 8 wire) and there is no preformed hooks on the ears so the cable holds basically on fit (not an issue with CIEMs) and tension from the slider. ISN chose wisely to make it tight enough.


Despite its 8 wire footprint especially considering the 24 AWG, the AG8 is supple and comfortable to wear. Given its footprint and how classy it looks though, I feel better wearing it at home that on the move where lighter alternatives can be more appropriate and also allow to enjoy its sonic qualities to the fullest.

The ISN AG8 is not at all the typical silver profile in terms of its signature, but the past years have shown material is not the only element determining the sound profile of a cable. If I had to sum up the AG8 I would say it’s a smooth and full sounding cable with good vocal presence, with remarkable soundstage expansion, layering and imaging. As we’ll see in the pairing section, the AG8 pairs better with IEM with reference to natural signatures rather than the bassier and warmer IEMs.

The AG8 is an interesting cable bass wise, while it does not boost bass particularly neither adding quantity not tightening the bass for a punchier more controlled presentation.

Rather it improved the bass quality and in particular the bass detail and textures on every IEM I tried it with. There is something very analog about the AG8’s bass with a smoother presentation thanks to a smooth attack and a bit longer decay. I also found the percussive instrument’s tone to be quite accurate.

This makes the AG8 an interesting pairing with IEMs that can side on the drier side bass wise, I don’t have many of those but for example the fast, punchy and controlled bass of the Fusion had just an extra wetness and richness and therefore a more tactile feel that I found to be great as it doesn’t compromise the underlying qualities of the Fusion.

The AG8 is going counter to most silver cable tuning mids wise : it makes every IEM fuller sounding with a definite lower mids boost, but also smoother sounding with again somewhat of an analogue feel with smooth attack and longer decay.

Note that it’s neither overdone – timbre is not affected – nor at the expense of clarity and transparency which is quite remarkable and makes for a nice combination of smooth yet clear presentation with IEMs with good upper mids presence and an open signature.

Instrument separation is improved with the AG8, as is usually the case with 8 wires cables, giving more breathing room to instruments and a better portrayal of more complex ensembles. Last but not least, I enjoyed the vocal presentation on the AG8 very much, it brings vocal a bit more forward with a smooth and clear delivery.

As we’ll see in the pairing section, the AG8 does wonder with the likes of Tansio Mirai Zodiac, ItsFit Lab Fusion, Earsonics EM10 or Dunu SA6. It doesn’t work as well with the warmer, smoother and fuller StealthSonics C9 Pro where clearer cables and source do pair better.

The AG8 is definitely a consistent cable across the range, it doesn’t betray its smooth nature from bass to treble.

The AG8 lower treble is spot on to my ears both in the energy it conveys and the tone, with a wetter treble presentation it helps bring the little something that provides extra engagement to more neutral IEMs as well as a more natural tone.

This doesn’t go in the way of the treble extension and the AG8 doesn’t disappoint with resolution and air being improved, benefiting soundstage as well as imaging precision.


Tansio Mirai Zodiac
This is probably my favorite cable with the Zodiac. If you’ve read my Zodiac review you know that I rate it very high. the Zodiac is a highly transparent IEM with superb soundstage and imaging. It packs good punch down low, open transparent mids with good bite and refined upper treble.


Compared to the stock cable, the ISN AG8 bring a lot to the table starting with an even more expanded soundstage. The Zodiac is already a top performer there with holographic stage but paired with the AG8 it goes into elite soundstage territory with further instruments separation and stage expansion. Overall the AG8 brings a more organic signature to the Zodiac, while not compromising its fundamental qualities.

Bass is even more layered and textured, with a tad more weight as well. Mids are fuller sounding with a bit more body and overall slightly warmer tilt on tone. Upper mids is smoother so there is a bit less bite making for a more romantic presentation. Instruments separation is a bit better and I felt this was beneficial for larger ensembles and more complex tracks. Treble tone is more natural with a slightly warmer tone which I like while at the same time retaining the nice lower treble sparkle the Zodiac is capable of.

Dunu SA6
I recently reviewed Dunu SA6 and it’s one of my favorite mid tier IEMs. The SA6 is a reference IEM with an organic twist, and its SPC stock cable is pretty good to begin with so I was interested in what the AG8 would bring to the table. Given my experience with the Zodiac, I expected the AG8 to make the SA6 a bit more organic still. As it turns out cable synergy is not always a same story with every IEM.

When paired with the AG8, the SA6 gains is a bit fuller but the gain is not as great as the Zodiac pairing which is not a bad thing per say as it doesn’t take the SA6 too far from its reference baseline. I must say while I use the SA6 with its switch to ON with the stock cable, I felt that switch turned off was better with AG8 with Hiby R8 (with DX160 I enjoyed both settings).

But the main benefit that was instantly apparent was the stage, the AG8 opens the SA6 up more than it does the Zodiac and the extra stage size in itself makes the SA6 an even more engaging listen than its very good stock cable.

Earsonics EM10
This is still one of my favorite custom IEM if you’ve read my review you know I consider it a most under rated IEM that can compete with the best and is no less good than the highly praised Grace. The EM10 is a highly engaging all rounder CIEM with totl performance across the board. I also consider the EM10 to be among the very best BA mid bass around no less.


The AG8 is a great pairing with the EM10 if you want to beef up its lower mids and make for a fuller sounding unit, and add a touch of warmth and body to its reference midrange. The added body won’t go in the way of separation and stage since the AG8 will bring extra separation and stage size compared to the stock cable.

I also found the the treble to be more natural with the AG8 with a less reference tone infusing a touch of a warmer treble tone while not compromising the superb upper treble extension and air of the EM10. As for bass, the benefit is obvious and significant to the textures and detail although those are pretty great to begin with so I’d say the main benefit to the EM10 is stil the mids with the AG8.

Custom Art FIBAE7
This is one pairing I suspected might be a toss up depending on how synergy would play out. The other pairings I tried before had me a bit worried the AG8 would make the FIBAE7 a bit thick and warmer. As it turns out it didn’t play out that way and I didn’t find tone to be warmer but the F7 has enough upper mids presence to balance out its lower mids presence so I guess this has something to do with it.

The AG8 smoothened the F7 upper mids though, I am talking of delivery with smooth attack rather than any cable related dip there as the upper mids presence was not affected by the AG8. This makes it an interesting option for people who find the F7 is maybe going to close or beyond their upper mids sensitivity at times (especially on some source like SP1000 or Hugo).

The extra separation and stage size over the stock 4 wire Null Audio Arete was significant with AG8 on the F7 making for a holographic experience.

StealthSonics C9 Pro
The upcoming flagship from StealthSonics I had the chance to recently review before its release is highly engaging and smooth with a strong bassline, full mids with superb vocals and very refined and elegant treble. It’s one of the most organic tuning I have heard to date, I was not sure the pairing with the AG8 would not be too much.

I was right, I didn’t find the pairing to be the best, the C9 Pro has quite a bit more lower mids presence than the average IEM these days. It’s a full midrange with a lot of body and the AG8 just takes it even a tad farther which even with the extra separation and stage size compared to stock doesn’t quite compensate the added warmth and body.

It’s a clear lesson that AG8 is not the silver cable that will bring more treble presence, clarity and transparency to warmer IEMs. Other pairings are more appropriate.

ItsFit Lab Fusion
If you’ve read my Fusion review you know I like the punchy and clear sound, with great soundstage and fantastic imaging. It’s more of a reference tuning and I suspected the AG8 would give me a more organic take on the Fusion and looked forward to it. I was right and it turned out as I expected making it one of my favorite cable with the Fusion along with DITA Oslo.


The Fusion clear and punchy bass gain more textures on the AG8 but it’s a constant with all my IEMs, it’s more spectacular with the drier bass of the Fusion though as the slightly longer decay makes for a wetter bass presentation that is quite an interesting variant. The reference mids gain body thanks to added lower mids presence, this is actually a bit more than Oslo which I didn’t expect. The mids tone is warmer with AG8 and I find it a more engaging listen. The same applies to treble were the Fusion lower treble are infused with a touch of warmth that I find pleasing. The Fusion remarkable upper treble is a bit less defined than with Oslo but has a more relaxing presentation that doesn’t sacrifice details.

In a market where premium cables price are skyrocketing and can honestly be questionable investments, there is room for high quality and high value cables at a fraction of the price. The AG8 is definitely well built, consistent with cables 2 or even 3 times the price and the performance is also in line with this ratio which makes it insanely good value for money.

ISN definitely was bold with the AG8, straying away from the typical silver cable tuning in favor of an organic cable that brings extra texture down low, a nice lower mids boost and a smooth delivery across the range combined with a nice separation and stage size expansion. This makes for a superb pairing with reference and natural IEMs and at this price to me a no brainer. In a similar price range, it performs better than my Null Audio Tiburon 8 wire for example and I find the overall build quality including braiding is superior.

Listening notes
I spent approximately 200 hours with the AG8, listening on iBasso DX160, Hiby R8 using Tansio Mirai Zodiac, Dunu SA6, Earsonics EM10, Custom Art FIBAE7, ItsFit Lab Fusion and StealhSonics C9 Pro.

Special Thanks
Thanks to ISN for providing a review unit of the ISN AG8. As usual, this review is my honest opinion. No incentive was given for a favorable review.

  • Carrying case
  • Material:High purity silver
  • Number of cores: 8 shares
  • Connector: MMCX/2pin 0.78mm
  • Plug:3.5mm audio/2.5mm/4.4mm balanced gold-plated
  • Cable length: 1.2M


Headphoneus Supremus
Pros: Excellent high quality flagship level pure thick silver cable from ISN, Increases detail across the entire sound frequency, Increases stage and depth. Increases instrument separation and texture. Not as heavy as it looks. Sub bass rumble is surprisingly great using the cable. Tightens that bass. Who don't like tighter bass!
Cons: They cost $200. You have to make a choice. Buy a new phone or buy a new cable for your phone. So thick you might not like how thick. But me I like mines THICK!.
DSC06833.JPG ISN H40 w AG8

ISN AG8 was provided by Penon audio for the purpose of review. The cables can be purchased here. I would like to thank Penon audio for providing the review sample. I have no affiliation with Penon Audio or was given any incentive to write any type of positive review about any item received from Penon. Of course you read this particular statement from reviews. Let's get real. Of course I am gonna have a bias. This being said as a consumer of all things in our hobby. I base my ratings on value at the price point. Are you getting what you would pay for set? Let's find out.
DSC06876.JPG EE Zeus w AG8

I know when it comes to cable reviews, either you will ignore these or will look into them with some interest. With the advent of the modern DAP. We are seeing the need for more and more aftermarket cables and especially in balanced form to use with said DAPs. I have seen a steady increase of cables made by ISN and they started with a very good SPC cable called the ISN S8. Silver coated copper is and should be the standard for all cables connected to phones be it over the ear or in ears. Manufacturers of in ear phones how a days either take the cable that come with the phones seriously or they don’t.
DSC06829.JPG TRi I3 w AG8

The idea of increasing the ability of a given earphone through a nice cable is a crazy idea and something that sound science guy loves to argue about. However I always tell guys that are in the hobby. Hear for yourself and you be the judge. What you do with your hard earned cash is all you.

In any case with a steady increase of cables produced by ISN. S8,S4,C-16,H-16,S-16,C4 and now the new AG8. Ag is the chemical make up for Silver and here we get a lot of it in the AG8.

There is something mystical and mysterious about silver. A high value material that we generally look at as a luxury item or in some cases to fend off werewolves. Pure silver cables are nothing new to the audio world and in fact has been used for decades. Has the absolute best transduction of sound. If it can kill werewolves I am sure it can cut through your muddy sounding earphones right?

Most earphone cables are made with copper at its core. Sonically copper produces an honest take on the sound tuning of a given earphone. Mostly affecting the phones sound to a fuller body of note which influences bass to mid bands. Higher up in copper also give a transparent take on the treble design.. Silver on the other hand enhances detail transparency and or resolution of a given earphone. When you mix the two elements you get something that gives a good balance of detail, fullness and or body of sound.

Today we are looking at a flagship level pure silver cable from ISN. These are a thicker cored 8 strands twisted into an 8 braid. If your looking for silver. You get a lot of it.

The cables come in the all too familiar black rectangular case that ISN always throws in with their cables and earphones. Inside you find the cable nicely coiled. The connectors and terminations are all custom made it is a unique all black with gold flake highlights for design. I have had zero issue with connecting any of my earphones and generally I find the connectors cable splitter chin slider and terminations all of high quality. The cable itself while one of the thicker cables for IEMs is not as heavy as it looks nor is it stiff as it could be. In fact the cables are easy to coil up, soft pliable and can easily be thrown inside the pouch. These thankfully come with zero ear guides which are unnecessary.

Getting a pure silver cable while is certainly not cheap. Can increase sonic detail for a given phone it is attached to. Here the ISN AG8 due to the thicker cores seems to dodge the one aspect that is common among silver cables and that is thickness of the sound.
DSC06838.JPG AG8 next to 16 core ISN C-16
In a word the ISN AG8 adds body with that detail and that my friends makes the AG8 a very interesting cable. Compared to my other pure silver cables the ISN S8 is a bit different. Not only in looks but also in design. It has to be the thickest 8 core pure silver cable on the market. My proof of this. This is a photo of ISNs own C-16 16 core copper cable which I know for a fact is the thickest earphone cable out in the market. The AG8 is next to it. I am certain sonically the ISN AG8 would not be achievable if it was using less material. This silver cable is brawny and thick. Thicker than any other 8 core cable I have used.
DSC06875.JPG Fiio EA3 w AG8
So what does all that silver do for your earphone? It is simple. It makes your earphones sound much higher end. Testing various phones from budget level to TOTL level in my Solaris the first thing you will notice is how expansive the sound will be using this cable. Expanding sound stage just by using a cable? That sounds crazy but AG8 has shown me time and time again. Has the most widest of stage. If you need a cable to give your earphone sound some space. These are the cables to go with. Then there is the increase in detail. That increase in stage also increases the scope of sound of your earphone. Gives a deeper more detailed cleaner clearer sound. Silver seems to clean up the notes of any artifacts around what you hear giving it a cleaner more chiseled sound with addition of better texture throughout the sound frequency of any given phone it is attached to.
DSC06873.JPGKBear Diamond w AG8

Case in point. I have the AG8 here on a cheaper $79 earphone called the KBear Diamond. It goes from a good sounding earphone with decent resolution to something that sounds absolutely stunning with the cable. Ya I know the cable cost more than double the earphones. I tried it on them for the sake of research OK so don’t kill the messenger!
DSC06857.JPG Andromeda S
But then you connect the cables to something that is already known to have a good high level of sound like the Andromeda S and you get even a higher end sound. Better definition and precision. A wider scope of sound. Impeccable imaging, added treble shimmer and sparkle. How can I tell these things are happening you ask? It is simple. Once you get used to hearing the AG8 with a test track. Go back to the stock cable your phones came with. You will notice a decrease in stage and depth. Treble will sound a bit muted in comparison. Imaging not as good.

The AG8 is similar to supercharging your engine for your car. It supercharges your earphones it is attached to.

The thicker core count of the AG8 I honestly believe adds to the fullness and give the sound a boost in depth. This is one cable that non believers have to try as it is easy to hear the differences going from a stock sound to the AG8 cable. Bucking the view of what silver does as you will read sound description of silver cables stating they tighten the bass. There is some truth to that. AG8 does as well but what these cables do for sub bass resolution is amazing. The cables increase detail of all sound regions including bass. Does not make the bass bigger per se but that sub bass rumble sounds spectacular using the cables.
DSC06874.JPG Solaris w AG8
Silver it is what's for dinner. You can't fake silver! It has a distinctive sound on your earphones and if your a silver fan. I can’t think of a better pure silver cable than the ISN AG8. Like all good things in life, these will cost you to try a set and they aren’t cheap. Do I think they are worth your hard earned cash? Well I did mention I got a AG8 for review but my 2nd cable I had to buy.
DSC06872.JPG Diamond & JVC FDX1 w AG8s
Cus these are amazing cables. I have more than just mmcx earphones. What is better than one thick pure silver cable. How's about two thick pure silver cables. After hearing them on my mmcx earphones I had to buy a 2nd set for my 2 pin earphones. Buy them, enjoy them, love them and hear sound from your earphones you had no idea it could do. Thanks for reading and as always happy listening-- which you will enjoy more with silver.
Thank you for review
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