Digiflavor Siren 25 GTA Tank Review

Digiflavor Siren 25 GTA
The Siren 25 GTA from Digiflavor: A great tank for flavor chasers.


Today we’ll be taking a look at the Digiflavor Siren 25 GTA. Digiflavor isn’t nearly as well-known among vapers as some of the other more popular manufacturers of vaping gear, but it was founded by the same team that is behind some of the other most popular vaping products on the market, so they definitely know their shit.  However, vapers these days have an abundance of choice when it comes to what type of tank they vape with, so it really takes a lot to stand out from the competition. Is the Siren 25 GTA a worthy competitor to some of the best and most popular tanks on the market? Is it worth the money?

Let’s find out.


The Siren 25 GTA is a nice, sturdy looking tank. It has a respectably sized 5ml capacity and measures in at 43mm height and 25mm diameter. It looked pretty cool when screwed in to a variety of different box mods, including the KBOX 200 and the SMOK H-Priv.

One of the coolest design features of the Siren 25 is the glass cut-out in the chamber, allowing you to see the coils in action and giving it a more modern appearance.

It comes with two different drip tips: a larger one that gives you a looser draw and a smaller one for a tighter draw. The best one is a matter of personal preference, but I found that I liked the larger one better. More vapor = more clouds, which is always cool in my book. But if you’re looking for something that will make the tank a little smaller or if you prefer a tighter draw than the included small drip tip will be perfect for you. I really like that Digiflavor included both of these in the box, giving you the option instead of predetermining how THEY think you should vape. Everything should always be decided by the vaper in my opinion.

The tank is made out of a sturdy glass, I’m assuming Pyrex. I did a drop test on a variety of surfaces, dropping it from approximately six feet each time and it didn’t break once. So the construction on this thing is definitely solid. It does come with a replacement glass tube in case yours breaks, however unlikely that may be.

Digiflavor Siren 25 GTA contents
Everything that’s included in the box of the Digiflavor Siren 25 GTA.


You’re most likely used to building on decks that sit on the bottom of the tank, or perhaps you’re used to the Genesis style where the deck sits up top. With the Siren GTA you’re looking at a tank that has the deck right smack in the middle of the tank, with juice both above and below it. It seems like the Siren has been designed primarily for flavor-chasers, although I was able to get a few sick clouds out of this beast as well. The airflow is a little bit tighter than what you’d expect from more cloud-chaser oriented tanks. It’s not necessary better or worse that way, just different from what I’m used to. You adjust the airflow by twisting and airflow control ring, allowing you to select an airflow hole size ranging from 2.5mm up to 4mm. If you’re not a fan of massive amounts of airflow, that low setting of only 2.5mm will be right up your alley, as it allows only a minimal amount of air to get through.

The deck was relatively easy to build on. Unscrew the screws on each side, put the wire in, and then tighten the screws back up and you’re basically done. The space is very limited inside, so it might be a bit iffy to get a larger gauge of wire in there. Make sure to tuck the tails of the wire into the little slots that are located right next to the air hole in the bottom of the deck and cut them even with the deck. Screw the tank back together and start vaping. Not a very complicated process, especially if you’ve done this before on other tanks.

This is a top-fill tank, so you’ll need to unscrew the top cap to access the fill holes. I was extremely impressed by the size of the fill holes. I was actually able to just pour the juice in without any spills. Fuck worrying about a dropper. Definitely a plus in my book.

While the Siren GTA 25 isn’t necessarily designed to be optimized for sub-ohm vaping, I was able to get phenomenal performance out of my sub-ohm build. Of course with the sub-ohm build I got much more vapor than I did when using a 1.0 ohm build, but it wasn’t as much as I am used to with other tanks that are designed specifically for sub-ohm vaping. Still satisfying, just not as many massive clouds. The flavor, however, was out of this world. And that’s where the Siren really shines. As I mentioned previously, this is a tank designed for flavor-chasers, not cloud-chasers. If you’re really looking to unlock some more flavor from your favorite e-juice, this really is a great tank.

Siren 25 GTA by Digiflavor.
The Siren 25 GTA has a respectable 5ml juice capacity with a “floating” deck in the middle of the tank.

Bottom Line

I was really impressed with the build quality and design of the Siren 25 GTA. Everything seemed to be machined well and it held up perfectly during normal use and during my various drop tests. If you’re looking for a tank that’s going to giving you more flavor from your juices and don’t mind that it’s not going to give you those monster clouds, then you’ll be more than satisfied with this tank. It definitely occupies a niche in the vaping market and it does everything that it claims to do. As long as you aren’t looking to do any crazy builds, you won’t be disappointed. Cloud chasers should look elsewhere for  a tank that has more airflow and the capability to support larger builds.

Buy the Digiflavor Siren 25 GTA for $37.99 at Heavengifts.com.

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