Since I was Young I had the "electronic" bug. After 35 years in electronic and Computer Business my favoured Hobby is still Analog Audio Technology.
Own a couple of tape Recorders, like Nagra, Stellavox and Uher. In my Collection I have the Nagra IV-SJ with Serial number 07. The Nagra SN is with red print, Serial number 546. The NAGRA III was build for "Deutsche Telefunken" in year 1966.
Second main focus are Record Player with tangential arms. (Transcriptors Transcriber, Rabco, Studer, etc)