Cthulhu Hastur MTL RTA Mini Review

Cthulhu Hastur MTL RTA Mini Review

Cthulhu Hastur MTL RTA Mini Introduction:

The Hastur MTL RTA Mini is the latest RTA from somewhat known manufacturer; Cthulhu. I’ve had hit and miss experiences with their products. They’ve made some great atomizers like the Azathoth RDA which I loved and the Hastur MTL RTA which isn’t my style but is a great RTA for MTL (mouth to lung) and came out when there weren’t many good affordable ones on the market, but also had some stinkers like the M RDA and most recently the Zathog RDA.

The Hastur Mini RTA is an MTL RTA and a follow up the smaller version of the original Hastur RTA. It’s a standard 2ml capacity RTA with regular glass and frosted glass tanks included. It’s available in 2 colors; Black and SS and is listed at 31.99 on their site, so a good price point.

Cthulhu Hastur MTL RTA Mini ReviewCthulhu Hastur MTL RTA Mini Specs

  • Height: 30mm (without drip tip)
  • Outside Diameter: 22mm
  • Capacity: 2ml
  • Type: Single coil RTA
  • Drip tip: 510
  • Material: Food grade 304 steel
  • Thread: 510 thread
  • Innovative and smaller single coil RTA with 22mm diameter
  • Precise bottom airflow control with 3 air holes
  • Smaller chamber for better flavor
  • Easy two posts build deck
  • Extremely slim drip tip
  • Convenient top filling design
  • Food grade 304 stainless steel
  • Two 510 drip tips and two glass tubes
  • Designed by Brian N(CA, USA)

Cthulhu Hastur MTL RTA Mini Packaging List

  • Hastur MTL RTA mini
  • Steel tip
  • Delrin tip
  • Spare bag
  • Frosted glass

Initial Impressions and Features

When I first got this RTA I was pretty surprised, I expected it to be a smaller version of the Hastur MTL RTA, hence the name but it’s really like a whole different design. New deck, fewer airflow options, no replaceable air holes inside. They went with a very simple minimalist design which I kind of like. Just keep it short and simple as they say.

One thing that really stood out was the inclusion of a really tall drip tip as well made of metal. Not a big fan of that person so I mostly used the standard one but I had flashbacks to my old omega RDA. Either way, though I liked the design and loved that they kept the same fill method which is really great using the pop off switchblade like system.

Cthulhu Hastur MTL RTA Mini ReviewBuild Deck 

Let’s talk about the build deck now. It’s a pretty simple build deck to build and quite easy but won’t say I’m personally a fan. I don’t like using the heads of screws as the system that locks the lead into place as this does. Feels old and outdated and something I haven’t seen really in years. I would have preferred something more up to date but personal preference aside, it does work well especially since it’s made for small round wire builds only being MTL.

There are 2 posts, 1 on each side so leads go in opposite directions and you just have to unscrew the screws a little and slide the leads under the screw heads then tighten them down. There is plenty of room as well as I fit a 3mm ID coil with room to spare and not much reason to go bigger with an MTL RTA. Then just clip off the excess leads and you’re done. The post screws are Phillips head which again preference wise I don’t like, but are good quality and it works well so objectively no complaints there. Overall, it’s a basic and easy to build the deck that works well, just not my preference.

Cthulhu Hastur MTL RTA Mini Review


Wicking on this one is super easy. It wicks very well and is a raised GTA style deck and there are 2 holes on the side. Just drop your cotton through the holes to the bottom and you are good to go. No tips or tricks really needed. It wicks very efficiently so don’t need to think out your wicks really at all.


Performance wise, I used it as a single coil RTA only. It’s an MTL RDA so not much you can do with builds so I ran only 3 builds in this. One was a spaced 24G SS coil 3mm ID 4 Wraps, one was a 28G SS316 2.5mm ID spaced build 8 wraps, and one was a tiny quad-core fused Clapton build 3 wraps spaced 3mm ID. The Clapton build was not surprisingly too much mass for this RTA. The other 2 builds however vaped great. Personally, I like the thicker gauge spaced builds fewer wraps for MTL RTAs like this but both performed with good flavor for MTL vaping.

It’s best used at 20 watts or less because of not a lot of air. The Draw will make many MTL enthusiasts quite happy, fully open is still tighter than most “loose MTL vapes” while the smallest air hole is a really tight MTL vape and the medium is still pretty tight as well. Overall it gives a good flavor for an MTL RTA at such low watts.

Overall Impressions, Details, and Extras

It’s a bottom airflow RTA with 3 tiny holes all on one side that you can adjust from the outside like many RTAs. The AFC is nice and smooth and on a stopper. All the way to 1 side is the smallest hole, all the way to the other side is the largest hole and in the middle is a medium hole and the full to each side lines up perfect which is nice.

It does lack knurling for grip however and I found it tough to adjust on the mod, but off the mod, it’s very easy to adjust. While the OG Hastur had inserts to change air at the coil, this one does not. It just has 2 small holes on the inside under the coil. They do sell an optional post with 1 larger air hole, however, I did not receive one to judge it. The air is nice and smooth, no whistle or loudness on any air setting either.

Cthulhu Hastur MTL RTA Mini Review

Overall Impressions, Details, and Extras Continued

It has the same top fill as the OG Hastur where it switchblades into the top. Essentially there are 2 notches on the fill hole portion and you just twist the cape when they line up it pops open to expose the 2 large fill holes that can be filled with any type of bottle but I wouldn’t do a pour it in. The top cap has a square section that tip goes into for easy grip to pop it on and off. To put it back on just line up the notches and push down and twist a quarter of a turn and it locks in. I really love this top fill design. All the threading is really nice on this RTA and it’s easy to take apart and put together. Really nice quality.

There is also a good amount of accessories that come with it. It comes with 2 standard 510 drip tips, a regular Delrin one, and a tall skinny metal one. They also note that the newer stock ones will include another drip tip but mine didn’t so can’t confirm. It comes with a standard 2ml tank and a frosted glass 2ml tank. I love the look of the frosted glass tank personally and chose to use that all the time. Plenty of extra o-rings and 2 spare post screws as well and a screwdriver. Would have been nice if they threw in a coil or 2 and some cotton but not a big deal.

Cthulhu Hastur MTL RTA Mini Review

Cthulhu Hastur MTL RTA Mini

The quality on the Cthulhu Hastur MTL RTA Mini is excellent. All the threading is really nice and smooth. It’s a 22mm diameter RTA with nothing that bulges out. It’s also one of the shorter RTAs as well. Shorter than the galaxies and savor MTL RTAs I’ve reviewed recently. If you are looking for a really small one, this is it. The 2ml capacity is good for an MTL RTA. There is no JFC and it doesn’t need one. I had no leaking or flooding issues and it handled chain vaping pretty good as well. Branding is nice and simple. Nothing on the outside and just the Cthulhu logo on the chamber inside the glass on one side. It’s a classy and simple looking RTA.

Cthulhu Hastur MTL RTA Mini Pros and Cons 


  • Build Quality
  • 2 Standard 510 tips included
  • Good quality post screws
  • Affordable price
  • Fill holes are large.
  • Great threading
  • Nice easy to build and wick deck
  • Nice frosted spare glass included
  • Plenty of spare accessories
  • Good flavor for an MTL RTA
  • Nice smooth AFC
  • No whistle or loud air on any setting
  • Love the top fill design
  • Really short and small


  • 2ml capacity could be better, wouldn’t have minded a bubble glass
  • Not a fan of Phillips head screws personally
  • Fewer air options than the original Hastur
  • Lack of color options

Cthulhu Hastur MTL RTA Mini Video Review 


So with all that said, do I recommend this RTA? I don’t like to do a hard yes or no, this one is going to lean heavily towards the yes. I had to be pretty picky with my cons and they were all personal preference really and not anything wrong with the RTA itself. What we have is an affordable and small MTL RTA that’s easy to build, has good flavor, easy to wick, and really does a tight MTL which is something many MTL vapers have been asking for.

Anthony Vapes

I started vaping in late 2011 to quit chewing tobacco. over the past few years i got a lot more into the hobby side and buying and collecting a lot of gear. Fed up with the lack of good fair reviews i decided to start doing reviews late 2016 and haven’t looked back. I enjoy providing people with technical reviews that are fair and unbiased and from a place of knowledge to help them spend their money wisely.