Apr 15, 2023 at 7:42 PM Thread Starter Post #1 of 1 AudiophileJesse New Head-Fier Joined Sep 17, 2016 Posts 31 Likes 12 Does anybody else notice a difference in sound signature between the current Koss PRO4AA model and the old vintage model from 1970?
Does anybody else notice a difference in sound signature between the current Koss PRO4AA model and the old vintage model from 1970?