Not really a review, I just wanted a place to actually discuss this, as my vendor thread where I sell mods is about selling mods, not discussing their specific parts in detail. My modding threads don't really go too much into detail about this board either. So I wanted a place where I could, as I love the hell out of this board and I truly find it disappointing that more people haven't at least heard of it as it's been giving me the best vape I've ever had. I'm sure between my PWM thread and just being around the block, most of you are familiar with PWM, at least to a certain degree. PWM (Pulse Width Modulation) is where the input voltage is regulated out in an extremely fast switching fashion. You use a potentiometer to control how fast/often the timer switches, thus controlling the overall average output power. With RMS PWM, you can get even more accurate than the duty cycle action. The iPWM is obviously a PWM board. Though it's no run of the mill PWM setup, believe me. First of all, it switches at 25Khz, meaning good luck hearing it. It is DEAD ass silent, no buzz/hum, no vibrations. It's also timerless to the best of my knowledge, meaning you're getting one of the most accurate PWM experiences you can get. But it's not just a silent/accurate PWM board, no. It has features that a lot of your typical retail regulated devices have. You can turn the mod output power on or off, check the input voltage (remaining battery life), set a favorite voltage and then go in and out of favorite mode, run diagnostics on the board via LEDs and the meter, switch between input and output voltage when firing, it's a great board. It's also super easy and simple to wire up. Everything is clearly labeled and each solder pad and hole terminal has ample room for any wire a modder would use for each connection, from potentiometer to meter to 510 to battery and then the switch. It's quite simple to get set up, so for any newer box modders, don't shy away from trying this board out. Though to those of you who don't make mods, I advise you try a iPWM powered mod out. It's 2S-4S in the sled (Li-Ion) version and 2S-6S in the Lipo version. It can adjust all the way down to around 0.5V even in 6S mode, so it can suit vaping ranges from 5W to 5,000W. It even goes through a diagnostics check each time you insert the battery. It's a responsive little board that fits nicely in pretty much anything and can do a LOT for not a lot of investment. There's a ton of modders out there who offer iPWM mods, though I truly recommend the more adventurous of you to try making a mod for yourself. The process is quite relaxing and you may be surprised at just how easy it is once you learn basic things like soldering and drilling. Otherwise, to the every day vaper, I still feel like an iPWM mod would serve you well. If you ever get a chance to put one of these boards in a mod or to purchase a mod powered by one, I do recommend it. They really are wonderful little PWM boards with nice features. A dual 21700 or even 20700 iPWM could put out around 5-300W and fit in a small 1590G/1550P enclosure to boot. That's a super pocket friendly, durable, nice looking mod that puts out a power range that would satisfy 95% of vapers. Sure there is no temperature control or custom screens, and since it's only a voltage display you will have to do some ohm's law calculations for your wattage, but otherwise it has a lot of advantages compared to your typical mods. Give it a shot, truly. All of the things that may have put you off from PWM before like the annoying buzz, a low power range and etc. aren't present at all on this board. To any of you who own iPWM mods, please post and tell me how you've liked them and how they've lasted. I've only been using the boards for a month but so far it's smooth sailing, and I wouldn't mind hearing how other people like the board. That's mainly why I posted this. I know Manny ordered an iPWM mod a while ago and Anthony said he had one, but other than those two and my own customers I don't really know anybody who has used these boards. Also John (Big Al) is a great fucking dude so I can't recommend his shit enough. Amazing customer support skills on top of a great product line.