'Stewart' branded equipment was manufactured by Stewart Electrical Industries Ltd,
the distributor is unknown.
Currently there are 7 documented models.
| IMAGE | YEAR | MODEL CODE | VALVES | BANDS |
|---|---|---|---|---|
| 1961ish | Stewart Manhattan | 2 | ||
| 1961 | Stewart Maryland | 5 + magic eye | Broadcast | |
| 1963ish | Stewart Jewel Box | 2 | ||
| 1963ish | Stewart Manhattan 'Stereo' | 3 | ||
| 1965ish | Stewart Maryland 'Stereo' | 6 + magic eye | Broadcast | |
| 1965ish | Stewart Maryland Minor | 7 transistors, 2 diodes | Broadcast | |
| 1966ish | Stewart Cocktail | 5 |