Hi,
Mike's A820 may be the most unique one in this world. Although its serial number is older than mine, it has the latest software version for MkI A820 - 06/89. Mine is the original 38/86 which is the about the same period of 38th week of 1986 when mine was manufactured. Mike's A820 had been optimized as the perfect reproducer but has many enhanced recording functions in the software.
Here's the complete list of all software update for 1/4" and 1/2" Studer A820 still available from Audiohouse in Swiss:
STUDER Software Reference List
11 Feb 2000 Page 1 of 1
A820-0.25", -0.5"
SOFTWARE ICPLACE DATE ICTYPE CHECKSUM IDENT HARDWARE
1.820.983.21 18 50/91 2716 1B0A TC-Delay 1.820.722.21
1.820.994.27 17 10/92 27128 3A94 Capstan 1.820.764.28
1.820.995.24 16 35/95 27128 9D07 Tape Deck 1.820.785.26
1.820.995.24 18 35/95 27128 D06F Tape Deck 1.820.785.26
1.820.996.22 15 06/89 27128 59B4 Master MKI 1.820.786.24
1.820.996.22 16 06/89 27128 38ED Master MKI 1.820.786.24
1.820.996.22 18 06/89 27128 6148 Master MKI 1.820.786.24
1.820.996.32 15 02/93 27513 0E8C Master MKII 1.820.786.33
1.820.996.32 16 02/93 27128 C6A9 Master MKII 1.820.786.33
1.820.996.32 18 02/93 27128 FF06 Master MKII 1.820.786.33
1.820.999.23 41/87 28S42N Serial Remote IF 1.820.729.25
Ki