| English | eng-000 |
| valve amplifier | |
| 普通话 | cmn-000 | 电子管放大器 |
| 普通话 | cmn-000 | 真空管放大器 |
| English | eng-000 | electron tube amplifier |
| English | eng-000 | electronic tube amplifier |
| English | eng-000 | thermionic amplifier |
| English | eng-000 | tube amplifier |
| English | eng-000 | vacuum tube amplifier |
| English | eng-000 | vacuum-tube amplifier |
| Esperanto | epo-000 | tuba amplifilo |
| русский | rus-000 | ламповый усилитель |