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← 841
Rolling Candidates to replace 841
Power Triode — DHT — UX4
⚠ Safety
Drop-In Replacements
✓
VT-51
Top 10 Picks
Rolling Candidates (34)
i
Heater:
1.4V
0
1.5V
0
2V
0
2.5V
2
3.3V
0
4V
2
5V
2
6.3V
2
7V
1
7.5V
4
10V
4
11V
1
Fit:
Drop-in
5
Adapter
13
Status:
✓ Close
1
✓ Safe
17
⚠ Low Pa
16
18 shown
▣ Compact
⚙ Thresholds filter
2.5V Heater
(2 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
843
✓ Close
15
W
2.5
adapter
2A3
✓ Safe
15
W
2.5
drop-in
4V Heater
(2 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
PX25
✓ Safe
25
W
2
adapter
PX4
✓ Safe
15
W
1
adapter
5V Heater
(2 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
300B
✓ Safe
36
W
1.2
drop-in
350A
✓ Safe
20
W
2
adapter
6.3V Heater
(2 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
3C24
✓ Safe
25
W
3
adapter
6B4G
✓ Safe
15
W
1
adapter
7V Heater
(1 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
RV258
✓ Safe
32
W
1.1
adapter
7.5V Heater
(4 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
50
✓ Safe
25
W
1.25
drop-in
801A
✓ Safe
20
W
1.25
drop-in
800
✓ Safe
35
W
3.25
adapter
RV218
✓ Safe
24
W
1.1
adapter
10V Heater
(4 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
845
✓ Safe
100
W
3.25
drop-in
242C
✓ Safe
100
W
3.25
adapter
8005
✓ Safe
85
W
3.25
adapter
211
✓ Safe
75
W
3.25
adapter
11V Heater
(1 candidates)
i
Tube
Status ↑
Pa
Ah
Fit
849
✓ Safe
300
W
5
adapter
Generated 2026-04-09
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