APIB USB ADAPTER for AP S1, S2 & S2c is used to run the Audio Precision Systems using ApWin 2.24 with modern computers. This also runs ATS2 using 1.5 software. The OS of XP, Vista, Win 7,8, 10 & 11 through USB (No ISA, PCI or PCIMCIA CARD is needed). The CD has been replaced by free download files and filled with all files needed and other helpfull programs. Made in USA. 

Anyone who buys or uses a Audio Precision System One, Two, Cascade or ATS2 will need a computer interface to run the AP. New computers don’t support ISA, PCI, PCIE cards and the APIB USB ADAPTER is the device you need.

Please contact me with any questions.

Duke