I bought it used. The previous owner said he has about 100 hrs on it. He said the suggested burn in period is 200 hrs. Let's see. But I am not a big believer in burn in. I can't imagine the sound change linearly with time. I think for the first 50 or so hours, maybe there will be some changes in sound, and eventually, it will settle down. Like the cone now becomes more flexible compared to new. but I am not sure if it really requires 200 hrs. Maybe ... but even there is, probably the improvement will be hard to notice.
And I am with you. I buy something, and I want it to work in day one, or shortly after.
And I am with you. I buy something, and I want it to work in day one, or shortly after.