eTracer US
| Tube type | Brand Sort ascending | Comments |
|---|---|---|
| 404A [triode] | Western Electric | =5847 |
| 10Y | Sylvania | 7.5V on filament (default) |
| 10Y [@6.3V] | Sylvania | 6.3V on filament |
| 2A3 | Sovtek | |
| 71 | RCA UX-171 | Original tungsten filament version (5V/0.5A) |
| 26 (bad) | RCA | UX226 globe. Tube is used up (3mA bias instead of 6-8mA) |
| 801 | RCA | Graphite anode |
| 5842Q | Raytheon | |
| 50 | National Union | Large ST shape |
| 45 rewire | National Union | Other tube internally rewired and labeled as 45. Has 2.5V/0.12A filament, mu of 5 and higher gm. |
| VT52 | National Union | ^^^ filament |
| 26 | National Union | ST |
| 1G4GT | ICC | rebranded |
| 801A | Hytron VT62 | =VT62 |
| VT67 | Hytron | =30 Special (2x filament current) |
| 1626 | Hytron | =VT137 |
| 45 | Full Music | Nickel "mesh" anode. New in box, but seems to have issues (wobbly lines) |
| 205D | Full Music | It's not a bug, it's a feature. Trademark TJ issues? |