1978-1987: Amplifier23.7.11a
1978-1987: Amplifier23.7.11b
1978-1987: Amplifier23.7.11c
1978-1987: Amplifier23.7.11d
1978-1987: Amplifier23.7.11e
1978-1987: Amplifier23.7.11f
1978-1987: Amplifier23.7.11g
1978-1987: Amplifier23.7.11h
1978-1987: Amplifier23.7.11i
1978-1987: Amplifier23.7.11j
1978-1987: Amplifier23.7.11k
1978-1987: Amplifier23.7.11l