Allen · Era
Allen analog era (vacuum tube / transistor).
MakerAllen
Model codeanalog-era
TypeEra
Introduced1937
Discontinued1970
StatusDiscontinued
Record confidenceMedium
Specifications
- first patent 1938; transistor-era designs through the 1960s; no published serial chart
Dating
No public serial tables exist for Allen — the brand page explains how to date it by era, plate location and component codes.
Related Allen models
- Allen ADC series — 1983–1990
- Allen APEX / APEX II — 2015–
- Allen MDS series — 1990–1998
- Allen MOS / MOS-2 — 1971–1983
- Allen Quantum — 2005–2015
- Allen Renaissance — 1998–2005