TUBEOFILE
Search
Compare
FAQ
Tube+
Sign In
Sign In
☰
Loading...
← 3DG4
Rolling Candidates to replace 3DG4
Rectifier — DHT — UX5
⚠ Safety
Drop-In Replacements
✓
3DH3
Top 10 Picks
Rolling Candidates (68)
i
Heater:
2.5V
0
4V
0
5V
1
6.3V
0
7.5V
0
12.6V
0
16.8V
0
18.9V
0
22.4V
0
25V
1
Fit:
Drop-in
0
Adapter
2
Status:
✓ Safe
2
⚠ Close, low Pa
39
⚠ Low Pa
27
2 shown
▣ Compact
⚙ Thresholds filter
5V Heater
(1 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
872A
✓ Safe
—
7.5
adapter
25V Heater
(1 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
25DK3
✓ Safe
9
W
0.45
adapter
Generated 2026-04-09
Status legend →
User Guide →
Rolling FAQ →
target +
0
selected
pick 1+ to compare
select 1+ candidate to compare