I think that Harbeth's own production of drivers is the only explanation for the recent controversy at pinkfishmedia.net. There, a customer found glue stains on the driver and an uneven driver basket. Judging by the photos, that driver was made in the basement by slave.
Harbeth XD - What's The Difference | Page 8 | pink fish media
Harbeth XD - What's The Difference | Page 8 | pink fish media