6922 vs 6DJ8
6922 / E88CC versus 6DJ8 / ECC88 — two triodes compared.
6922 vs 6DJ8: which one to choose?
The 6922 and 6DJ8 are directly equivalent in most applications — same pinout, same electrical envelope, same general sonic signature. 6922 is the American/RETMA designation; 6DJ8 is the European Mullard-Philips name (or vice versa). You can swap one for the other in nearly every circuit without rebiasing, with the caveat that production-batch differences between manufacturers (Mullard vs Sylvania vs JJ vs current Russian production) often matter more than the type-number itself.
Side-by-side specifications
| Spec | 6922 | 6DJ8 |
|---|---|---|
| Full name | 6922 / E88CC | 6DJ8 / ECC88 |
| Type | Triode | Triode |
| Primary use | Preamp | Preamp |
| Era | 1958 | 1958 |
| Heating | indirect | indirect |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.365 A | 0.365 A |
| Amplification factor (μ) | 33 | 33 |
| Transconductance (gm) | 12.5 mA/V | 12.5 mA/V |
| Plate resistance (rp) | 2.6 kΩ | 2.6 kΩ |
| Max plate voltage | 130 V | 130 V |
| Max plate dissipation | 1.5 W | 1.8 W |
| Base | noval | noval |
| Manufacturer | Amperex·Philips·Siemens | Amperex·Philips |
| Rarity | Sought-after | Common |
Sonic character
Need an interactive deep dive?
The Amperatubes comparator visualises loadlines for both tubes side-by-side, simulates the SPICE response, and lets you adjust the operating point in real time.
Open 6922 vs 6DJ8 in the interactive comparator →