Acoustic apparatus wearable on the head

Acoustic transducer

Acoustic transmission connection, headset with acoustic...

Acoustical transducer mounting arrangement

Active crossover and wireless interface for use with...

Active crossover and wireless interface for use with...

Active crossover for use with multi-driver headphones

Active crossover for use with multi-driver in-ear monitors

Active noise reduction audiometric headphones

Adjustable behind-the-ear communication device

Adjustable bluetooth wireless earphone

Adjustable clip-on headphones

Adjustable ear canal retention transceiver/receiver

Adjustable ear canal retention transceiver/receiver

Adjustable earphone with a microphone

Adjustable earphones for personal audio and communication...

Adjustable hanging-type earphone

Adjustable headphone

Adjustable headset

Adjustable headset