Ki,
We had one lone APR-5003 in our audio post department back at 54th St.
By the time I started at Sony (2002) it wasn't being used very much.
We sold it at the 2007 auction.
We did have a lot of Sony digital recorders.
4 PCM-3348HR, 2 K-1183 (20 bit version of the PCM 3402) over 20 PCM-1630/DMR-4000 systems, about a dozen PCM-7030, another dozen PCM-2800 and countless Sony CDP-2700.
Analog was Studer & Ampex. In 2002 we had;
5 A827, 5 A800 MkIII, a dozen or so A820, 4 A820/Cello 4 track, 2 A807 4 track, 1 A80RC, 1 A80VU-2, 1 ATR-104/Aria, 2 ATR-104, 6 ATR-102. All the ATR's were rebuilt by ATR Services.