TUBEOFILE
Search
Compare
FAQ
Tube+
Sign In
Sign In
☰
Loading...
← AL5/375
AL5/375 — Candidate to replace following?
Power Pentode — P8A
⚠ Safety
Top 10 Picks
AL5
drop-in
4V
✓ Close
AL3
drop-in
4V
✓ Safe
Your Tube
Base:
P8A
Heater:
4V / 2A
Type:
power pentode
gm:
7.5
mA/V
ra:
22,000
Ω
Ia:
72
mA
Pa:
18
W
Vs:
275
V
Pinout (P8A)
a
g1
k
h
h
g2
ia
g3
nc
Candidates to replace (10)
Heater:
4V
2
●
6.3V
8
show all (2)
Fit:
Drop-in
2
Adapter
0
Status:
✓ Close
2
✓ Safe
8
2 shown (target 4V only)
▣ Compact
⚙ Thresholds filter
4V Heater
(2 candidates)
Tube
Status ↑
Pa
Ah
Fit
AL5
✓ Close
18
W
2
drop-in
AL3
✓ Safe
9
W
-50%
1.85
drop-in
Generated 2026-04-09
Status legend →
User Guide →
target +
0
selected
pick 1+ to compare
select 1+ candidate to compare