Jeroen Hoogland

Northwestern University is a private institution founded in 1851 to serve the Northwest Territory, an area that now includes the states of Ohio, Indiana, Illinois, Michigan, Wisconsin and parts of Minnesota. Northwestern has three campuses

Part of Gold Peak Technology Group Ltd., GP Acoustics (UK) Ltd. is a British company that specializes in PA speakers, guitar amplifier loudspeakers, and speaker compression drivers. The company is based in Crawley, UK. Celestion, the company's brand, is world-renowned for its pro audio loudspeakers and iconic guitar amp speakers. Founded in 1992, the company offers a full range of speakers online, including a full range, LIVE response speaker, purpose-designed for use with amp modellers and IRs with two additional tweeter cones integrated into the main woofer.

KEF Audio Group is a British company.

Part of Gold Peak Technology Group Ltd., GP Acoustics (HK) Ltd. is a Chinese company that wholesales audio equipment and home theater systems. The company is based in Hong Kong, Hong Kong.

GP Acoustics (US), Inc. manufactures audio products. Its products include Hi-fi speakers, home theatre, powered speakers, wireless, architectural speakers, and headphones. The company was founded by Raymond Cooke in 1961 and is headquartered in Marlboro, NJ.

GP Acoustics International Ltd. distributes acoustic products. The company was founded on December 31, 2010 and is headquartered in Hong Kong.

Part of Gold Peak Technology Group Ltd., KEF Audio (UK) Ltd. is a British company that specializes in audio equipment. The company is based in Maidstone, UK. The company offers the Kube12b, a 12-inch bass driver active subwoofer that is designed to deliver deep bass for music and movies. The Kube12b has a 300 Class D amplifier and a large 12-inch driver, as well as iBX.

KEF Japan, Inc. manufactures loudspeaker design and technology. The firm’s products include hi-fi speaker, home theater, powered speakers, wireless, and headphone. The company was founded in April 2014 and is headquartered in Tokyo, Japan.