McIntosh MPI4 (2EA.) MAXIMUM PERFORMANCE INDICATOR

I AM SELLING TWO MAXIMUM PERFORMANCE INDICATORS (MPI4s).  BOTH UNITS WERE SERVICED THE END OF 2015 BY GEORGE MEYER AUDIO OF LOS ANGELES.  THE COST OF SERVICING OF THE TWO UNITS WITH SHIPPING WAS ALMOST $2,000.  COPIES OF THE INVOICES ARE AVAILABLE.  THEY HAVE BEEN USED SPARINGLY SINCE BEING SERVICED.  IF YOU ARE A MCINTOSH COLLECTOR YOU NEED AN MPI4.  I RECENTLY CHECKED THE UNITS AND THEY WORKED VERY WELL.  I COULDN'T CHECK THE MULTIPATH BECAUSE I DIDN'T HAVE THE APPROPRIATE FM TUNER, BUT WITH ALL OTHER FUNCTIONS WORKING WELL I AM CONFIDENT THE MULTIPATH WILL FUNCTION WELL TOO.  THE SERIAL NUMBERS ARE AF1722 AND AF2556.  I WOULD PREFER TO SELL THESE RARE ITEMS TOGETHER BUT WILL CONSIDER SELLING ONE FOR $1,750.  I WOULD RATE THEM AS A 7 COSMETICALLY GIVEN THEIR AGE.  I HAD TO CHOOSE PRE AMPLIFIER IN THE SUBCATAGORY BECAUSE THERE ISN'T A TEST EQUIPMENT CHOICE.  THE MPI4 IS NOT A PREAMPLIFIER.