⭕ Audio Precision Dual Domain 2722 Analyzer, including PSIA 2722 serial interface adapter and AUX0025 filter accessories. All manuals and software included. Original boxes included. This unit was purchased November 2015. Project has ended - we dont need it any longer. Collection or shipping and in case of unhappy, simply return within 30 days for a full refund. Includes Dell D630 laptop with software loaded as well. Unit communicates to the laptop via Audio Precisions PC-CARD APIB interface.