 As well as the large US market, IVC products were particularly successful in Great Britain were IVC had a subsidiary company, IVC UK Ltd.The IVC 800 series 1 Inch VTR was very popular.800 series were reel to reel helical 'mid band' professional color VTRs using 1 inch/25mm tape running at 17.2 cm per second/6.77 inches/second.