r/headphones on reddit have many posts about it might find the 'how to' on a google search of that subreddit.I have the t2, what’s this mod?
It's basically blocking one of the ports near the frontside nozzle. You can do it with tape/bluetack or you can invert the stock IEM tip and that seems to block it too. I think the bass gets like a 3-4db boost from 100hz and below.
I assume if you wanted a less substantial boost some filters (like tuning paper you can buy on aliexpress) would give you a boost too but one that's less emphasised.
But since the T2 by default is bass light, many seem to love this mod. Only downside of completey blocking it off is you increase airflow pressure on your ear, which may or may not be a wise thing to do. I think the filter option would lessen that effect.
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