Used Koss QZ-99 (with on-earcup volume control) for $22

The Koss QZ-99 closed headphones with on-ear volume control (actual volume knob on Left earcup, see picture #1 there) goes for around $42 in new condition, but if you are comfortable with used condition products, you can get it in “Used – Good” condition (cosmetic imperfections, damaged packaging) for around $22 by Amazon Warehouse Deals. The headphones average 4.2 out of 5 based on 200+ customer reviews.

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