TUBEOFILE
Search
Compare
FAQ
Tube+
Sign In
Sign In
☰
Loading...
← EL44
Rolling Candidates to replace EL44
Power Pentode — Rimlock
⚠ Safety
Top 10 Picks
KT66
adapter
6.3V
✓ Safe
6BH5
adapter
6.3V
⚠ Low Pa
6AH6
adapter
6.3V
⚠ Low Pa
5749
adapter
6.3V
⚠ Low Pa
6F23
adapter
6.3V
⚠ Low Pa
EF183
adapter
6.3V
⚠ Low Pa
EF184
adapter
6.3V
⚠ Low Pa
EF80
adapter
6.3V
⚠ Low Pa
EF814
adapter
6.3V
⚠ Low Pa
EF800
adapter
6.3V
⚠ Low Pa
Rolling Candidates (13)
i
Heater:
3.6V
0
6.3V
1
●
19V
0
show all (3)
Fit:
Drop-in
0
Adapter
1
Status:
✓ Safe
1
⚠ Low Pa
12
1 shown (target 6.3V only)
▣ Compact
⚙ Thresholds filter
6.3V Heater
(1 candidates)
Tube
Status ↑
Pa
Ah
Fit
KT66
✓ Safe
25
W
1.3
adapter
Generated 2026-04-09
Status legend →
User Guide →
Rolling FAQ →
target +
0
selected
pick 1+ to compare
select 1+ candidate to compare