RadioEar is a company with over 100 years of history in the audiology industry, specializing in the production and sale of bone vibrators, including the industry-standard B71 bone vibrator used in diagnostic testing with audiometers. They have a legacy of innovation, introducing the first magnetic microphone for hearing aids in 1946 and pioneering the bone conduction transducer in 1948-49. RadioEar has expanded its product line to include air transducers, headsets, insert phones, and speakers, constantly seeking new technologies to enhance their transducers, such as the B81 with balanced armature for higher output levels at low frequencies.