Quick summary: The Convex 2.0 is a highly modular, boutique convection portable designed by Entheos. It is powered by the Yihi SX600 chip, providing full “On-Demand” temperature control. This second iteration features a rugged, 3D-printed body and a redesigned swivel chamber made of Zirconia ceramic, which houses a user-replaceable stamped 316 stainless steel heater. Following a highly anticipated preorder period, the first units reached customers in late April 2026.
Manufacturer’s claims:
Full Convection Heating: 100% convection airflow path for superior flavor and purity
Yihi SX600 Intelligence: Utilizing the proven Yihi SX600 chip for precise TCR (Temperature Coefficient of Resistance) accuracy
Modular 3D-Printed Design utilizing industrial MJF technology: Lightweight, PA12 (nylon), heat-resilient body with a grippy texture and replaceable sections
Enhanced Zirconia Chamber: Dual-swivel mechanism (left or right) for easier loading and cleaning compared to the V1
User-Replaceable Heater: The stamped 316 SS heater coil is designed for longevity and easy maintenance.
Confirmed specs:
Form factor: Ultra-portable, battery-powered (Single 18650)
I love this vape!
I’ve only had it for a week now and im nowhere near dialed in but it’s alot of fun to use.
Hoping the manufacturer will get this thread rolling like the old one, it’s been very nice to see this come to fruition and i think Entheos has something very interesting on his hands here. Worth a try if you’re a commited enthusiast for sure.
He already gave me some corrections which have been added to the original post fyi
Can those of you that have the device share how many sessions per charge you are averaging so I can add to the specs above? I am not exactly using mine efficiently (yet… still dialing in to my exact preference) but it seems like I’m getting 8ish sessions/bowls before the battery is down to around 1/3 and I replaced it. I need to see where the cutoff is but won’t do that until I’ve made the settings mine. I started with P30b batteries but just got in my Eve 30PL x8 so I’m going to be using those and retire the Molicels to the recycling center.
We are Entheos Hex. A cannabis tech startup focused on making heat extraction devices. It originally started as the solo project, Tokedvapors. We just recently launched our flagship device the Convex 2 and I would like to give a brief description on what we have built:
The Convex 2 follows the same goal as the original Tokedvapors unit; a pocketable, on demand and heavy hitting device. Everything except the chip is designed from the ground up drawing inspiration from multiple designs throughout the existence of portable dry herb vapes.. We use a YiHi SX600 chip using TCR based temperature control ; all its function, features and firmware were originally meant for e-liquid vaping. All firmware changes have to go through them.
That being I said, I would describe the Convex series of devices like a project car build. We took a chip meant for e-liquid devices and designed around it a convection heating system for dry herb extraction in an ultra-portable form factor. The results have been great and performance is competitive with the top tier but there is still much to explore within the chip and how its features may apply to our use case. With this forum style discussion on DHVs back, I look forward to the ideas and expertise from this community to find even more performance and efficiency gains in the realm of dry herb extraction.
Thank you to everyone supporting us and your consideration for the faults we still have as an early stage startup in the hardware industry.
Hey, thanks for reposting the thread. My original post got lost somehow when the archive went offline.
Still waiting on mine that’s stuck in customs but initial feedback seems very positive. I can’t wait to test it out. Had my eye on this one for some time…
No problem man, I reached out to Entheos first to ask if they wanted to post and they gave me to ok so I went ahead and did it.
in other news, I finally tried some fresh ground flower a little earlier and the flavor might actually be the closest to TB2 I’ve tried in portable. It’s closer than I expected and I’d have to do a sbs still but I think the TB2 gets that terp-coated mouth feel a touch more.
… But I still haven’t quite dialed it in yet. When it’s finally set and working to my draw style it might even be on par.
@Entheos.Hex quick question… for the TCR values on the website you mentioned it’s a recommendation. How much higher above that can we go? My coil after reset reads .2826 both times i did it but even at .00210 it seems like it’s about 20-30 degrees lower than the temp i have it set to.
Also on the TCR settings does it have to be saved in increments of 5? I tried setting it to .00207 when adjusting and I couldn’t get it to fire. Tried .00200, .00205, and .00210 so far.
Nice! That’s what I’ve been hoping to hear. The TB2 is tough to match and I’m convinced their draw sensor readings are used somehow to regulate the heater and keep the vapor smooth. Any comparison with it is high praise imo.
A little surprised that users have to recalibrate TCR though. Was hoping it would be factory-set-it-and-forget-it.
The only limit on the TCR value is combustion really and how much glowing coils one would tolerate.
The TCR doesn’t really require a factor of 5, no idea what’s up with that 207 not working.
This is how I currently have 2 units setup:
.31 ohms and .30 ohms both @ .00188 TCR, I run it at its max 60w as of late. (I figured since competition uses 70 and 120 watts, might as well)
I fine tune my TCR value by extracting one full bowl at 230C, finding the point where it turns to a dark roasted coffee color. I got a bit of tiny hotspot combustion at .00190, I then bumped it down to .00188 and got the same bowl to even out. Results have been consistent for the subsequent bowls.
In general, one would start with a number in the TCR value table on the site and then increase/decrease depending on the ABV output. The table is only a recommendation, your abv output will matter more. I go up/down by 5 depending if the temp is way off like when I combust or no/wispy vapor. Then I increase/decrease by 1 or 2 to try and even out the bowl color. Increasing TCR value applies more heat.
The whole relationship of the hardware to the software makes the device kind of like in between a regulated and a non-regulated mod.
That’s a great idea to calibrate the higher end! If I do any more dialing in, I will switch to that method. For now, I think I’m going to leave it where it’s at and stay between 402F and 427F during my sessions. I’m pretty happy with the performance as is here.
I’ve had a few bowls with some consistency now… I haven’t adjusted settings beyond temps. My gosh this thing is tasty!
The o rings I ordered are in and I’ll be testing different sizes out for the bottom pieces this weekend.
Any updates on accessories/WPA availability? I really wanna run this through my Funkler. Assuming it is intended to be inverted for use on glass, have you found yourself needing to replace the heater housing mesh screen?
Speaking of screens, can you also confirm what size they are so we can order some replacements? I’ve been brushing after each sessionand kept mine mostly clean, but it would be nice to have spares on hand.
Yeah Entheos told me that is expected on a dry burn because there’s no airflow and the TCR doesn’t like that. I’ve seen it a couple times when testing to make sure i was pushing the fire button correctly.
Could you describe to me please when the ‘no liquid’ pops up. At the very start of the dry burn or after pressing the fire down for some seconds? And what temp were you at?
It pops up after a second or two after pushing the button - just as the name of curve would change to number of hits. Then when I press again sometimes it pops up again and most times it doesnt.
I push the button and wait for neut or name of whatever curve it is on to dissapear and number of hits is shown and then start to inhale.
What temp was it set at? This has been an observed behavior in the low end temps usually 180 to 200C. If it happens too fast to be able to start an inhale, it can be usually resolved by 1 or 2 bump up in TCR value. It happens when the chip finds a hard time maintaining the low end temps without active airflow.
