soundcraftsmen mono amplifier pcr 800 where was manufactured?

I have lot of cardboard boxes and bubble wrap - it will be packaged appropriately. Amplifier has been in a smoke free / pet free home. Please send questions or additional photo requests if needed. Work for me to power a set of speakers just fine. Adjunct membership is for researchers employed by other institutions who collaborate with IDM Members to the extent that some of their own staff and/or postgraduate students may work within the IDM for 3-year terms, which are renewable.

I think there is a later version, depending on the serial number, of the PCR800s that also used the exicon mosfets as well. I've read that the some the exicon mosfets sounded cleaner compared to the hitachi's. I've always thought of these as half of a pro power four, has a capacitor in it the size of my fist. The S800 shares the same specs at the PCR800/PRO POWER ONE - using EXICON MOSFETS over Hitachi S800 - (SHOEBOX, 4 EXICON TO3-METAL MOSFETS/CH, RCA INPUTS, PCR POWER SUPPLY, FAN COOLED, EXTERNALLY AND INTERNALLY BRIDGEABLE).

Soundcraftsmen S800 power amplifier - part of the line of shoebox amplifiers - very similar to the PCR 800 - MTX bought/merged with Soundcraftsmen in the late 90s and continued the product lines until the mid-90s (1995?) The PRO POWER ONE / PCR 800 became the S800 with dual branding.

Soundcraftsmen mono amplifier pcr 800 where was manufactured?