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← 45
Rolling Candidates to replace 45
Power Triode — DHT — UX4
⚠ Safety
Drop-In Replacements
✓
UX245
✓
245
✓
145
✓
345
✓
45A
✓
A245
✓
CV610
✓
EX645
✓
FR304
✓
G45
✓
L45
✓
MX245
✓
PX2450
✓
T45
✓
VT-45
Top 10 Picks
2A3
drop-in
2.5V
✓ Safe
Rolling Candidates (26)
i
Heater:
1.5V
0
2V
0
2.5V
1
●
4V
2
5V
3
6.3V
2
7V
2
7.5V
7
10V
4
11V
1
show all (10)
Fit:
Drop-in
1
Adapter
0
Status:
✓ Close
2
✓ Safe
20
⚠ Low Pa
4
1 shown (target 2.5V only)
▣ Compact
⚙ Thresholds filter
2.5V Heater
(1 candidates)
Tube
Status ↑
Pa
Ah
Fit
2A3
✓ Safe
15
W
2.5
drop-in
Generated 2026-04-09
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