I received the T800 today.
Unfortunately, they forgot to include the T180, so I can’t compare the 2 models at the present time. I sent a message to Audiosense and hope to get it resolved.
As far as the T800, I’ve done an unbox and a preliminary listen to a few audio tests and a number of music tracks. However, I can say that I am extremely impressed.
The T800 has a low end that closely approaches a dynamic, which is all that I’ve ever wanted in a BA set.
Build quality is excellent, comfort is excellent. I wish the nozzle had a lip to help retain the eartip, but that’s a minor issue that can be easily overlooked because nothing is perfect right?
As far as the treble, and tuning filters, the treble sounds perfectly fine to me. It is not overwhelming, not harsh, not overly bright, etc. I have no desire to add additional damper filters.
I have gotten the feeling that people feel they have to buy and use filters with the T800, like it’s an automatic purchase that’s required to fully enjoy the T800. And that’s just simply not the case at all.
My advice is to just try the T800 as-is. No extra filters required. If, and only if, you dislike the default tuning, then maybe order a few filters. Of course I can’t speak for everyone’s treble preference, but IMO they are totally unnecessary.
Perhaps my opinion of the treble will change upon more hours, tip rolling, cable swapping, etc. But I am usually pretty good about judging what I like and what I don’t right out of the box. And the T800’s treble is tuned just right IMO.