Woah, came back after patiently waiting for Kannons to start shipping, this thread certainly took off in a promissing way so far.
I'm #115 backer and from Finland so have to wait for a bit still.
I personally cannot wait to give them a try and give a more subjective oriented analysis but in a technical manner and talk about topics such as punchiness, impact, tightness of the bass. For me my personal favorite I've come across with the best punch vs tightness vs impact factor is the cheap M-Audio Q40 especially when paired with a DigiZoid ZO v2.1 amp which this headphones pairs best with out of all the digiZoid variants (I have them all myself). Without the ZO amp they can be "decent" but with the amp set about mid-way the bass just becomes oh so good in terms of punch & impact while the rest of the range sounds still BETTER than it would without (gives an allround more full-bodied speaker-like signature as I tend to feel headphones without any proper amping just all sound way too thin compared to proper speaker setups that can sound really good across the whole range). I've tried quite a few headphones afterwards but couldn't find any that I thought sounded equally good so partially I guess the sound signature of a headphone and taking all equations into account, source, amp, your personal fitting of the headphone etc all make a rather big impact (it could be I just happened to get close to my personal holy grail sound as it won't sound great out of any source or amp combo for sure, just this particular config I just happen to love even after like 4 years without needing any EQ'ing at all apart from configuring the flexible bass boost adjustment on the digiZoid amp.
The Kannons is the first headphone on the paper I have a lot of confident it will finally take over the long awaited fav spot I've been desperately trying to find because the taction technology when done right just does make so much sense in a technical manner when it comes to be able to produce bass you can feel while keeping the quality great. If you have to resort to loudness to achieve something, there's just too many other factors starting to impact negatively and it's more about which scenario impacts it less. DigiZoid for example I thought did great in this aspect in the amp section with their SmartVektor technology, shame their business didn't take off but it's great to see more pioneers in audio business is taking a leap of faith into the unknown with a high quality approach that has taken a lot more detail into attention with this tactor tech because having this possibility built directly into the headphone product will always be ideal as opposed to using fancy processing in a source or amp, so if you can achieve an authentic experience directly from the headphone itself, that will always be even better.
I'm personally a recovering chronical basshead from quite a few years ago now and my focus is more in the, bass impact (you can feel) vs sound quality factor where I'm looking for as balanced sound possible with as much bass I can feel as possible without leaving details in the midrange and highs impacted and I have a feeling this product just might be what I've been looking for all these years to up the ante further. I'm also an experienced hobby mastering engineer for Hardstyle genre in particular where I've mastered probably close to 1000 tracks by now so I'm grown very good at hearing subtle changes in sound and understanding how to maximize impact of the kickdrums etc while leaving dynamicness intact. Sometimes you can actually get a more impactful kickdrum when you shave off some bass and boost the highs if those are badly adjusted, for me quantity isn't important as a basshead, the less quantity with more impact the better, it's the "feel" part that I think a lot of us bassheads are longing for but wouldn't be able to achieve properly until upping the volume levels to dangerous levels and putting your hearing at risk at worst.
Sorry for the long jibberish post but I'm really enthusiastic with this tactor technology and I feel it's something which could probably offer heightened experience also for the more "traditional" audiophile audio oriented gear (Sennheiser HD800 *cough* and alike) and I think it's more about the engineers need to open up to the thought, at least that's what I hope the Kannons might help with.
Finally if it's one feature I think that is of key value with Kannons it's probably the fact that Kannons has the ability to better preserve the hearing for bassheads as they no longer have to put up with shouty mids/highs to feel the bass (similar to what is possible to achieve with certain amps/EQ configs to certain extent but not in an ideal way though).