The K72 from AKG is a closed-back and over-the-ear studio headphone that features professional-grade 40mm drivers and a self-adjusting headband that
AKG K72 Closed-Back Studio Headphones
AKG Headphones Comparison: K52, K72, K92 - Which to Choose? Sound Check — Eightify
AKG K72 studio monitor headphones. How do they actually sound?
Difference between AKG's k52, k72 and k92? : r/HeadphoneAdvice
Precisely Balanced Response Provides Reference-Monitor Accuracy Professional 40Mm Drivers For Extended 16Hz - 20Khz Frequency Response Over-Ear Design
AKG Pro Audio K92 Over-Ear, Closed-Back, Studio Headphones, Matte Black and Gold
Review: AKG K92 - Best headphones that is under $100?
Comparing AKG K92, K72 & K52 Headphones
Review: AKG K52 Studio Monitor Headphones