![](https://coimages.sciencemuseumgroup.org.uk/55/897/large_thumbnail_1959_0212__0001_.jpg)
Valve Amplifier C Mk IV, c.1918
- maker:
- Newton and Wright Limited
![Amplifier, valve, C Mk IV, No. 2378](https://coimages.sciencemuseumgroup.org.uk/472/144/medium_smg00305276.jpg)
Valve Amplifier C Mk IV, serial number. 2378
General purpose audio amplifier used for amplification of earth current signals and as a detector-amplifier for receivers and tuners, used by the British Army and introduced in 1918 near the end of the First World War. 1250 units were made - all by Newton & Wright