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← 1H4
Rolling Candidates to replace 1H4
Small Signal Triode — DHT — Octal
⚠ Safety
Drop-In Replacements
✓
1H4G
✓
1H4GT
Top 10 Picks
30
adapter
2V
✓ Close
31
adapter
2V
⚠ Low Pa
Rolling Candidates (17)
i
Heater:
1.4V
0
1.5V
0
2V
1
●
2.5V
0
3.3V
0
4V
0
5V
0
6.5V
0
7V
0
7.5V
0
show all (10)
Fit:
Drop-in
0
Adapter
1
Status:
✓ Close
1
⚠ Low Pa
16
1 shown (target 2V only)
▣ Compact
⚙ Thresholds filter
2V Heater
(1 candidates)
Tube
Status ↑
Pa
Ah
Fit
30
✓ Close
—
0.06
adapter
Generated 2026-04-09
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