What a brilliant little device! The form factor and price are amazing. I will wait to pull the trigger on one (or more!) until I see a review from someone with the technology to measure things accurately.
This does remind me of issues with the VAMO v3-v5. Many people were complaining that they were not regulating voltage well and firing much hotter than the settings might suggest. Then it came to light that the chipset was capable of firing in both VAVG (or mean) & VRMS modes. VAVG output feels substantially hotter than VRMS. Phil Busardo speaks briefly about this in his VAMO v5 review (
https://www.youtube.com/watch?v=FLO3PTUek2o) starting at 16:40. According to Phil, vaping in VAVG (or mean) mode feels "hot, way hot" as compared to VRMS (The technical reasons for this are explained in the previously linked threads/articles). All his charts on the VAMO v5 were measured in RMS mode. After he started doing measurements (in AVG mode), he was "just about ready to blow it in and warn people about it". Does any of this sound familiar?
Of course the iStick has no buck circuitry. Most, if not all, of our popular APVs (VAMO, ZMAX, DNAs, Provaris, etc) have no actual electrical bucking capability. They boost the battery output to a much higher votage and use pulse-width modulation (PWM) to approximate our desired voltage/wattage. Some rectify/filter beautifully and make the output look like smooth, constant DC voltage (Provari, etc). Some don't. It would appear that the iStick is outputting in VAVG mode rather than VRMS. That's too bad. For many vapers (but NOT ALL), this will provide an unpleasant vaping experience. Is there an ability, on the iStick, to switch between AVG (or mean) & RMS output? Has anyone tried pushing and holding buttons, in various combinations, often for a long time, to determine this?
I will wait for a thorough review before making any decisions or recommendations. Except for the iStick's wonderfully small form factor, my VAMO v3 (at $25) and VAMO box mod outperform the iStick in most every way and allow me to vape at 30w.
Just my opinion. I could be wrong.
Hope everybody has a great day!
~Alden