I recently had a chance to spend a short time with EXT MKII borrowed from Musicteck, and I was interested in how it compares to the OG EXT, in both the sound tuning and design ergonomics.
While the overall shell design is very similar, including hosting 4EST drivers in the nozzle, the tip of the nozzle is noticeably smaller in diameter, improving the comfort of the fit. Of course, this is subjective and relative to the anatomy of your inner/outer ear, but for me personally, I had to rotate EXT OG inside my ear to find a more comfortable position to relieve pressure from the nozzle, while with EXT MKII, I hardly even needed to rotate the shell and the fit was more comfortable during extended listening sessions. The pictures below are of their limited edition "golden" model with EA cable.
I found EXT MKII to have a balanced sound sig with a detailed natural musically-rich tonality. Here you will find a deep extended bass with plenty of fullness and bloom, extending down to a textured analog-quality rumble and rounded mid-bass punch with longer decay of notes. Also, I hear a fuller body with natural detailed mids enhanced with smooth rich coloring and clear detailed treble with plenty of natural clarity. EXT MKII stands out with a smooth natural tuning without being veiled or congested. Some manufacturers choose to have more bass impact or enhanced detail retrieval in their next-get releases. Instead, VE approached their next-gen EXT MKII with more musicality and richer tonality while still maintaining a pretty good level of natural detail retrieval.
In comparison to EXT OG, MKII has a bit less sub-bass rumble and a little smoother mids and treble which gives it a more balanced sound tuning and more organic musical tonality. OG has more elevated rumble and more clarity in upper mids, while MKII has a more linear sub-/mid-bass tuning and sweeter mids/vocals tuning while still maintaining a decent level of detail retrieval. Another difference I noticed here is while both have a similar soundstage width, the imaging of MKII is a bit more center-focused while OG imaging has a bit more spread.
