Hearing Fan

Dahlberg D-14

Ossiphone

Confessionaire

Beoton Horbugel

Globe Vactuphone

Maico 25-A

Primo Ph-3k

Struycken Monochord

Aurex PA Personal Amplifier

Telephone Amplifier

Wrist Ear

Panasonic WH-O1

Earmaster
   

© Kent State University, 1996. Revised 2005, I. Gerling, L. Kress and K. Gow