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← 12B4A
Rolling Candidates to replace 12B4A
Small Signal Triode — Noval
⚠ Safety
Drop-In Replacements
✓
12B4
Top 10 Picks
12W6GT
adapter
12.6V
✓ Safe
12BH7
adapter
12.6V
⚠ Low Pa
8416
adapter
12.6V
⚠ Low Pa
2C50
adapter
12.6V
⚠ Low Pa
7105
adapter
12.6V
⚠ Low Pa
5965
adapter
12.6V
⚠ Low Pa
Rolling Candidates (47)
i
Heater:
4.2V
0
6.3V
21
12.6V
1
●
22V
1
25V
1
show all (5)
Fit:
Drop-in
0
Adapter
1
Status:
✓ Close
1
✓ Safe
23
⚠ Low Pa
23
1 shown (target 12.6V only)
▣ Compact
⚙ Thresholds filter
12.6V Heater
(1 candidates)
Tube
Status ↑
Pa
Ah
Fit
12W6GT
✓ Safe
8.5
W
0.6
adapter
Generated 2026-04-09
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