+++ 1991.a. Philips DCC = Digital Compact Cassette
++ 1991.b. Sony DTC-690
+++ 1992.b. ADAT casssette
+++ 1992.c. Sony NT-1 -smallest digital cassette-recorder 
+++ 1992.c.c. Sony NTC - smallest audio cassette ever made
+ 1992.e. Philips AW7150
++ 1992.f. Akai GX-75 MK II
++ 1993.a. Philips DCC134
+ 1993.b. Philips DCC 300
++ ca. 1993.c. Tascam DA-60 MK II - sample of DAT profi deck
+++ 1994.a. Philips DCC 951 = their latest & most advanced deck 
+++ 1994.c. Tascam DA-38 - sample of DTRS profi deck
+++ 1994.c.c. Sony DTRS cassette
+++ 1994.d. Alesis XT - sample of ADAT profi deck
1995.a. Philips AZ8040