There is a seller on carousell who says he has demo unit actually. but he's selling at $60 i think.
But i think the sound on the KZ T1 will be a bit subjective. If you like KZN, I think this one will probably be okay for you? But my friend actually still prefer the Creative Outlier Air's sound cause he don't really like that much treble and find the T1's highs to be a bit too boosted. But for me I like the brighter highs. haha. As always audio stuff subjected to personal taste one.
Anyway, tested a few cycles of full charge and discharge. Battery life is just under 4 hours for the volume i'm using. More precisely it's like 3 hours and 50 mins. Good enough for my use liao. I was worried it would be like 2 hours+ only since manufacturers' rating often a bit higher than real life usage.