Sennheiser Induction Neckloop $89.00 Description: This induction neck loop transmits an audio signal from a receiver to a hearing aid through the use of a telecoil ("T") switch. Choose from the EZT 1011 with a 3.5 mm plug which is compatible with 810S & 250J sets or EZT 100 with a 2.5 mm plug which is compatible with 100J sets.