Those are 5mm drivers, 2 per side. Here's a quote from the Sensaphonics D2 intro press release a couple years back:

Sensaphonics D2 is a dual dynamic design using proprietary Dynamic Resonance Chambers. Here's a review from pro audio world: https://fohonline.com/articles/road-tests/sensaphonics-dual-dynamic-custom-iems/

Sensaphonics does still offer 2X-S, 2MAX (neutral) and 3MAX (bass). They've also added their first dynamic, the D2. Slightly bass-forward, dual driver, and only $600. Most recent offering is 3DME, with embedded binaural mics for Active Ambient pickup, and an app providing 7 bands of EQ, limiter...

Sensaphonics maintains its 2X-S, 2MAX, and 3MAX models, and has also added its first dynamic CIEM, the D2. It's a dual-driver design, full silicone shell, with a warm, bass-forward sound, and only $600. Here's a review link...

Ah, you are referencing Stumpy Joe, who was Spinal Tap drummer #2. He choked on (another person's!) vomit.

No! In fact, if Tap's Drummer #3 had used a water-based IEM like these Magic-Grow AudioFoams, it's likely his tragic end could have been averted...

Here's the annual Sensaphonics 4/1 release: https://www.sensaphonics.com/magic-grow

I'm clearly not up to speed on the situation, as I've obviously horribly misread the photo. I understand that the office is in touch with you directly, so I'm bowing out now, wishing you well.

Hi thmmax. The photo you posted does not show the IEM properly inserted into the ear canal, nor the helix tucked in. Not even close. From the angle shown, it's hard to tell exactly what the issue might be. But yes, obviously something is wrong. Maybe other SCS users here can advise. Have you...

Thanks for the kind words. The D2 is reviewed in the October issue of FOH Magazine. http://fohonline.com/articles/road-tests/sensaphonics-dual-dynamic-custom-iems/

This is a pretty decent approximation of the sound of my tinnitus.

Hi Mython, we basically agree. Please note that my post was a response to BigKD, and was a cross-post to your evaluation. And yes, as a MOT, my comments require a certain amount of diplomacy. It only chafes a little.

Those are legit concerns, BigKD, and the difference between left and right impressions may be a red flag. Hard for me to comment further, as Sensaphonics does only deep-canal, full-shell IEMs, where the silicone earpieces actually reach as far in as the impression is made. That is typically not...

Weird that no foam oto-block was used in the untipped side. I assume it just fell off? I further assume that the goldish tip on the other side is a substitute for the the foam-with-string oto-block I'm used to seeing. To answer your question, these don't look great, but every manufacturer has...

Saw this old thread come up in a Google search, so it seemed like an opportune moment to post some science: Silicone Isolation Study - Michael & Associates

Looking forward to your Sensaphonics review!

Moisture should not be an issue; see ClieOS' post. Not to mention that swimming, showering, manual labor, sports, etc. all contribute more moisture to the system. IEMs merely trap what's there, and only while inserted. The health area that IEM users should be concerned with is their hearing...

Send the same info and pix to Shure and you'll get a definite answer.

I think there may be a couple small companies who do that, but I have no experience with them. More thread-topic info... Here's a link to a new isolation study on Sensaphonics proprietary soft silicone formulation: http://www.sensaphonics.com/isolation

Silicone acts like a shock absorber, protecting internal components. Acrylic is strong, but it will crack with sufficient impact.

Do you know how loud you are listening? If you're wearing IEMs, probably not. Loud music is awesome and I love it. But losing your hearing slowly over time can ruin sound quality or take it away completely. Forever. May is Better Hearing Month, and Sensaphonics is raising awareness for hearing...

  My post was to remind audio lovers of the importance of their hearing health, nothing more and nothing less.   I find it highly ironic that so many audiophiles give virtually no thought to this topic, while at the same time expending much time and effort in search of DIY custom and/or truly...

Hello, Sound Eq.   Don't get me wrong; I support your goal. And I totally understand the frustration caused by poor fit, which is amplified many times over by living in a distant location.   My personal evaluation is that the disruptive technology you seek is elusive by nature. The Onkyo...

I remain amazed at the lengths to which audiophiles will go to avoid a trip to the audiologist. As lovers of sound, one would think that an occasional trip to the audiologist would be common practice - just like seeing a dentist or optometrist.  #RespectYourEars  

Oops d/p; sorry.