| Tube Testing Service Recommendation | tomcy6 | 3416 | 4 |
| Output Caps For Dehavilland Ultraverve | roxy54 | 5455 | 22 |
| To Float or not to Float... | erik_squires | 16260 | 41 |
| Do caps deteriorate with time even if an amp is not being used? | rodman99999 | 3130 | 9 |
| 12AU7 for DeHavilland 50A Amplifier | davidpritchard | 3668 | 11 |