FiiO BTA10-Additional Version for Audio-Technica ATH-MSR7 Series | Headphone Reviews and Discussion - Head-Fi.org
Go wireless with the Audio Technica MSR-7 - found the perfect bluetooth adapter: Tekhome mini. : r/headphones
FiiO BTA10, Bluetooth Adapter/Amp for Audio-Technica ATH-M50X Headphones. | Page 3 | Headphone Reviews and Discussion - Head-Fi.org
Xinvision Bluetooth Receiver for ATH-MSR7/SE/NC - Portable Wireless Bluetooth Adapter for AudioTechnica ATH-MSR7 SE/ATH-MSR7 NC Headphones,Microphone/Remote Volume Control : Amazon.com.au: Electronics