Old School Trio: AKG K701, Beyerdynamics DT880, Sennheiser HD650 - Headfonia Reviews
AKG K701 Headphone Reviews (China and Austrian Made) | Audio Science Review (ASR) Forum
AKG K701 Headphone Reviews (China and Austrian Made) | Audio Science Review (ASR) Forum
AKG K701 vs K712 Pro? | Headphone Reviews and Discussion - Head-Fi.org
Archimago's Musings: MEASUREMENTS: AKG Q701 "Quincy Jones Signature" (2012) & AKG K260 (vintage 1987-1988). And recent interviews with audiophile cable/power people [Shunyata / AudioQuest].
AKG K701 Headphone Reviews (China and Austrian Made) | Audio Science Review (ASR) Forum
Equal loudness graph - Reference Audio Analyzer
AKG K701 Headphones | FrontEndAudio.com
Frequency response of the AKG K701 (blue) and the Sennheiser HD650 (red). Really interesting result according to http://ift.tt/XzBtEO But don't stare at the num…
AKG K701 Studio Headphones - Reviews | Headphone Reviews and Discussion - Head-Fi.org
AKG K701 Headphone Reviews (China and Austrian Made) | Audio Science Review (ASR) Forum