Hey what is that you can hear?? Yes it is the return of the Siren – in fact it has a new name as well – it is now the Digiflavor S MTL RTA V4!

s mtl rta 4 banner

The Digiflavor Siren range have been legendary over the years for a great Mouth To Lung vape experience and there have been several different versions. The Z1 SBS kit included the Siren 3 and the Siren 1 and Siren 2 were well received too.

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More Details On The Digiflavor S MTL RTA V4…

As the name implies this is an RTA (Rebuildable Tank Atomiser) which has the beauty of a rebuildable deck plus a 2ml capacity tank to keep you topped up with liquid.siren v4 components

The deck is for a single coil build and looks pretty similar to the previous versions with 2 posts and 2 clamp screws.siren v4 deck design

A cut out in the posts allows for easy coil installation and leg trimming.

The airflow control appears to be different to previous versions with the actual airflow inlets being hidden.

You can adjust the incoming air with the airflow control and the incoming air flows to the honeycomb outlets underneath the coil. Digiflavor say this airflow gives less chance of leaks and spitting.

Remove the top cap for access to the 2 fill ports and you can monitor the e-liquid level through the tiny glass portion of the tank.

siren v4 fillingThe kit includes 2x 510 drip tips – a short one for more intense flavour or a longer tip for a cooler vape.siren v4 drip tips

You also get 4 different pre-wound coils (0.65ohm Braided coil, 1ohm and 1.2ohm Fused Clapton and 1.4ohm Clapton) and 4x shoelace cotton so you can get vaping in no time!siren v4 extras

Here is an introduction video from Digiflavor.

There are 4 colours to choose from: Silver, Gunmetal, Black and Rainbow.
siren 4 colours

Kit Includes

  • Digiflavor S MTL RTA V4
  • 4x Cotton
  • 4x DIY MTL coils
  • Spare 510 drip tip
  • Accessory kit
  • 2x spare slot screws
  • User manual

siren 4 contents

Digiflavor S MTL RTA V4 Specs

  • Size: 22x51mm
  • Capacity: 2ml
  • Single coil two post deck
  • GTA deck
  • Bottom adjustable airflow
  • Leakproof design
  • Easy trimming of coil legs
  • Long / short 510 drip tips included
  • Top fill cap

The Digiflavor S MTL RTA V4 has big shoes to fill as the previous versions were pretty epic!

Let me know if you fancy this in the comments below!

My name is Michelle - I am 45 and an engineer and Technical Author by trade. I started vaping many years ago in the days of Tornado tanks, Ego batteries and Variable Voltage. My journey in vaping began again a few years ago and have started to move up in the shiny shiny gadget department and love vaping! I have finally stopped smoking as of June 2019 and that is all thanks to vaping! 20mg Nicotine Salts are my hero! Oh and I am partial to a nice pod mod!


  1. Hi, I just bought one. Its a great littlelittle atty except the spit back issue. I have tried different diameter of coils with different quantity of cotton but no luck. If any preferred wicking pic can be posted then it would be really helpful. Thanks.🙂


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