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← 6AU4
Rolling Candidates to replace 6AU4
Rectifier — Octal
⚠ Safety
Drop-In Replacements
✓
6AU4GT
✓
6AU4GTA
Top 10 Picks
6EC4
adapter
6.3V
✓ Close
6CG3
adapter
6.3V
✓ Close
6CJ3
adapter
6.3V
✓ Close
6BE3
adapter
6.3V
⚠ Close, low Pa
6BJ3
adapter
6.3V
⚠ Close, low Pa
6W4
adapter
6.3V
⚠ Close, low Pa
5852
adapter
6.3V
⚠ Close, low Pa
5993
adapter
6.3V
⚠ Close, low Pa
6202
adapter
6.3V
⚠ Close, low Pa
6203
adapter
6.3V
⚠ Close, low Pa
Rolling Candidates (93)
i
Heater:
2.5V
2
3.3V
0
4V
0
5V
2
6.3V
3
●
7.5V
0
10V
0
12.6V
0
16.8V
0
18.9V
0
19V
1
22.4V
0
25V
1
show all (13)
Fit:
Drop-in
0
Adapter
3
Status:
✓ Close
7
✓ Safe
2
⚠ Close, low Pa
48
⚠ Low Pa
36
3 shown (target 6.3V only)
▣ Compact
⚙ Thresholds filter
6.3V Heater
(3 candidates)
Tube
Status ↑
Pa
Ah
Fit
6EC4
✓ Close
11
W
2.1
adapter
6CG3
✓ Close
6.5
W
1.8
adapter
6CJ3
✓ Close
6.5
W
1.8
adapter
Generated 2026-04-09
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