In the 12DW7/ECC832, Section 1 of the tube (pins 6, 7, and 8) is the high gain 12AX7/ECC83 spec (gain factor 100) and Section 2 (pins 1, 2, and 3) is the low gain 12AU7/ECC82 spec (gain factor 17).
| ECC832 (T-12DW7-JJ-X) | ||
| Section 1 | Section 2 | |
| Pins | 6, 7, 8 | 1, 2, 3 |
| Gain | Factor of 100 | Factor of 17 |
| Spec | 12AX7/ECC83 | 12AU7/ECC82 |
| ECC823 (T-ECC823-JJ) | ||
| Section 1 | Section 2 | |
| Pins | 6, 7, 8 | 1, 2, 3 |
| Gain | Factor of 17 | Factor of 100 |
| Spec | 12AU7/ECC82 | 12AX7/ECC83 |
