Submerged repeater amplifier, 1967
1967
Submerged repeater for TAT-1, 1956
1956
Transistorized audio-frequency telephone amplifier, 1955
1955
Transistorized audio-frequency telephone line amplifier, 1954
1954
Transistorized audio-frequency telephone line amplifier, 1953
1953
Prototype Cox selenium-cell magnifier equipment, 1910-1920
1910-1920
Home-built amplifier
1965; 1965
BBC TSA/2 Tone Source Amplifier
circa 1931
BBC amplifier type IB/103 used for outside broadcast with new ribbon microphone. In case
1935
BBC D/2 Amplifier
1931
amplifier
amplifier
amplifier
amplifier
Amplifier and sound recorder
BBC AM7/3 Internal Send amplifier modules
1972
Gaumont Kalee GK18 Amplifer
Gaumont Kalee GK18 Amplifer
two-wire telephone repeater, 1923-1925
1923-1925
Home-constructed Williamson amplifier, c. 1949
circa 1949
BBC OBA/9 Trap Valve Amplifier
1952
BBC OBA/9 Outside Broadcast Amplifier
1952
Marconi BD517C microphone and general purpose amplifier module
1961
BBC OBA/8 Microphone Amplifier & Programme meter
1938
Valve amplifier, by Shirley Laboratories Ltd, 1954-1960
1954-1960
Probably a battery powered amplifier
Third manufacturing stage of Amplifier for Lyman-alpha detector
BBC 2CT/2 Loudspeaker Amplifier
BBC AM8/6 Loudspeaker Amplifier
1963
Microphone Amplifier type OBA/8, 1939
circa 1939
Leak "point one" sound pre-amplifier, 1956
1956
BBC ERU/1 Equaliser and Repeater Unit. Transportable (mains only) line equaliser and repeater amplifier unit
BBC C/8 Amplifier
circa 1963
BBC C/3 Amplifier
BBC D/11 General Purpose Amplifier
circa 1943
BBC GPA/1A General Purpose Amplifier
Outside Broadcast Audio Amplifier
1936
Outside Broadcast Audio Amplifier
1900-1930
BBC OBA/8 Outside Broadcast Amplifier
1938
Marshall JVM410H-H 100W guitar amplifier head and associated accessories
2017
Heurtley magnifier, 1919.
1919
Three-stage amplifier and equaliser
1931-1940
Leak model TL/10 sound power amplifier, 1956
1956
Multi-wavelength gain block erbium doped fibre amplifier, 1999
1999
BBC TV/21 Trap Valve Amplifier
circa 1943
BBC AM8/14 (Quad 303A) Amplifier
1976
BBC AM8/14 (Quad 303A) Amplifier
1976
BBC AM8/11 (Quad 50D) Loudspeaker Amplifier
1966-1974
BBC AM14/21 Booster Amplifier
1977
Pye 4060 Compression Amplifier
circa 1965