Cello Music & Film Systems Series 8.1 DAC with Power Supply

Super rare and collectible. At the time of listing there were no others available in the USA. Tested and working properly.  This is the Cello Music and Film Systems Series 8.1 DAC, with Matching Series 8 Power Supply.  On the back of the main unit it says "Custom Built Exclusively for Cello Music & Film Systems by Apogee Electronics Corporation, Santa Monica, California" and "CELLO DA8.1 SN51375E REV C 8.3". The rear of the power unit states "120 Vac, Apogee Electronics Corp.PS-1000E, SN2240E, REV A1". The main unit has three digital inputs: One AES/EBU Digital Input, one Optical Digital TOSLINK, and one SPDIF Digital Input via BNC connector (Coaxial Digital). The only outputs are a pair of mini balanced male XLR connectors for the Left 'A' and Right 'B' Channels. Mini XLR converters/adapters are not included with this listing. This listing also includes the "Interface Connector" jumper power cable between the DAC and power supply. Lastly this DAC is also fitted with an additiona