Establishments primarily engaged in packaging, repackaging, and bottling of purchased chemical products, but not engaged in manufacturing chemicals and allied products, are classified in Wholesale or Retail Trade industries.
A phone connector, also known as phone jack, audio jack, headphone jack or jack plug, is a family of electrical connectors typically used for analog audio signals. The phone connector was invented for use in telephone switchboards in the 19th century and is still widely used. The phone connector is cylindrical in shape, with a grooved tip to retain it. In its original audio configuration, it typically has two, three, four and, occasionally, five contacts. Three-contact versions are known as TRS
An audio interface is a device which connects your various audio equipment to your computer (microphones, guitars, studio monitor speakers, etc). They can provide phantom power to amplify your microphones, hook up any MIDI device youâve got, and use an XLR port for a microphone. Audio interfaces convert the analog information into digital signals for your computer to recognize and lay down into your songs.