EL34 Review Chart
(View our complete selection of EL34 / 6CA7 / KT77 vacuum tubes)
Test Amps:
1973 Marshall Super Lead model 1959: This amp is completely stock using NOS pre-amp tubes. The sound was reproduced through a 1971 Marshal cabinet with 4 Celestion G12M "greenback" speakers.
1970 Marshall Bluesbreaker 2x12 combo, Class A Combo: Designed and built by Bernard Raunig. This is a true single ended class A amplifier, using a 5Y3 rectifier and a single 5691 pre-amp tube. With a volume and single tone control this amp really lets you hear the tonal differences between the tubes.
| Manufacturer | Model | Microphonics | Mechanical Noise | Detail | Harmonics |
| Electro Harmonix | EL34EH | 4 | 4 | 5 | 4 |
| Electro Harmonix | 6CA7-EH | 5 | 5 | 4 | 4 |
| Gold Lion | KT77 | 5 | 5 | 5 | 4 |
| JJ Electronic | E34L | 4 | 4 | 3 | 4 |
| JJ Electronic | EL34-II | 5 | 5 | 5 | 4 |
| JJ Electronic | KT77 | 4 | 4 | 5 | 5 |
| JJ Electronic | 6CA7 | 5 | 5 | 4 | 4 |
| Mullard | EL34 | 4 | 5 | 4 | 5 |
| Preferred Series | EL34 | 5 | 5 | 5 | 5 |
| Shuguang | EL34-B | 4 | 5 | 4 | 5 |
| Svetlana | EL34 | 4 | 5 | 5 | 5 |
| Tung-Sol | EL34-B | 5 | 5 | 5 | 5 |
| Siemens / RFT | EL34 | 5 | 5 | 4 | 5 |
| Sovtek | EL34WXT | 4 | 4 | 4 | 4 |
| SED / Winged "C" | EL34 | 4 | 4 | 5 | 5 |
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