Plantronics

In the early 1960s, airline headsets were so large and cumbersome that many pilots had switched back to the use of handheld microphones for communications. The speed and complexity of jet airliners caused a need for the introduction of small, lightweight headsets into the cockpit. In 1961, United Airlines solicited new designs from anyone who was interested. Courtney Graham, a United Airlines pilot, was one of the many who thought the heavy headsets should be replaced by something lighter. He collaborated with his pilot friend Keith Larkin to create a small, functional design which was robust enough to pass airlines standards. (Larkin had been working for a small company called Plane-Aids, a Japanese import company which offered spectacles and sunglasses that contained transistor radios in their temple pieces.) The final design, incorporating two small hearing aid-style transducers attached to a headband was submitted to United Airline approval. UAL's approval of the innovative design caused Graham and Larkin to incorporate as Pacific Plantronics (now called Plantronics, Inc.) on May 18, 1961. They introduced the first lightweight communications headset, the MS-50, to the commercial marketplace in 1962.

In the mid-1960s, the Federal Aviation Agency selected Plantronics as the sole supplier of headsets for air traffic controllers, and thereafter was selected to supply headsets to the operators of the Bell System.

In the 1980s, Plantronics created a line of cordless products using infrared technology. Though the technology utilized was the same one being used by television remote controls, the link did not require a Federal Communications Commission (FCC) telecommunications approval. One of the first products used the infrared beam to create a communications link between a small transmitter and a base unit which was connected to the telephone network. This product was the first "echo-free" speakerphone for use in conference rooms. The small transmitter could be handheld or clipped to clothing to ensure a good pickup of the speaker's voice.

Wireless office headsets

In 2003, Plantronics introduced the CS50 wireless headset for use on office phones. Since that time, Plantronics has manufactured other wireless headsets, including the "CS70N", CS500 Series, and Savi 700 Series. In recent years there has also been strong focus on Unified Communications headsets and speakers.

Mobile and Bluetooth mobile headsets

Plantronics manufactures mobile headsets, including a line of Bluetooth headsets for mobile phones. The Pulsar 590, for example, is designed for use with Bluetooth- and A2DP-enabled cellphones.

Plantronics has expanded into other segments of the audio equipment market through acquisitions.

Clarity

In 1986, Plantronics acquired Walker Equipment, Ringgold, Georgia, a manufacturer of amplified handsets and telephones. The Clarity products were created to enhance telephone usability for those with hearing impairment. Walker later acquired Ameriphone in 2002, and became Walker Ameriphone before changing its name to Clarity; Clarity is now a US supplier of amplified telephones. In February 2015, Plantronics released the Clarity 340 handset style phone for UC communications.

Altec Lansing

In 2005, Plantronics acquired computer speaker manufacturer Altec Lansing for approximately $166 million. In spite of a corporate makeover the brand continued to struggle and was acquired by Prophet Equity in October 2009 for approximately $18 million.

Volume Logic

Plantronics later acquired Octiv, Inc. in March 2005 as one of its brands and renamed it as the Volume Logic division. Octiv produced an audio toolset for creating 5.1 surround sound soundtracks. Although the Volume Logic series of applications have since been discontinued, the underlying technology has been adapted for use in Plantronics telephony products.