The KPH40 - Retro and Musical!!

Here is my original review/comparison of the KPH40, Porta Pro and KSC75 (with chapters for easy navigation):
• KOSS - KPH40 / Porta P...
Here is my impression of the Pro 4AA - I was a bit harsh but I also appreciate what it is!
• KOSS Pro 4AA - Going b...
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Correction on the release date. The KPH40 actually launched late 2021. Still fairly new to the KOSS lineup!