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← 7Z4
Rolling Candidates to replace 7Z4
Rectifier — Loctal
⚠ Safety
Drop-In Replacements
✓
CV1790
✓
VT-181
Top 10 Picks
7Y4
drop-in
6.3V
⚠ Low Pa
6AX4
adapter
6.3V
✓ Close
6325
adapter
6.3V
✓ Close
6AX5
adapter
6.3V
✓ Close
6BW4
adapter
6.3V
✓ Close
6BY5
adapter
6.3V
✓ Close
6AU4
adapter
6.3V
✓ Safe
6W4
adapter
6.3V
✓ Safe
6754
adapter
6.3V
✓ Safe
6AX6-G
adapter
6.3V
✓ Safe
Rolling Candidates (82)
i
Heater:
2.5V
5
3.3V
0
4V
5
5V
24
6.3V
12
●
7.5V
0
12.6V
2
16.8V
1
18.9V
1
22.4V
1
25V
2
show all (11)
Fit:
Drop-in
0
Adapter
12
Status:
✓ Close
21
✓ Safe
32
⚠ Close, low Pa
11
⚠ Low Pa
18
12 shown (target 6.3V only)
▣ Compact
⚙ Thresholds filter
6.3V Heater
(12 candidates)
Tube
Status ↑
Pa
Ah
Fit
6AX4
✓ Close
5
W
1.2
adapter
6325
✓ Close
—
2.7
adapter
6AX5
✓ Close
—
1.2
adapter
6BW4
✓ Close
—
0.9
adapter
6BY5
✓ Close
—
1.6
adapter
6AU4
✓ Safe
6.5
W
1.8
adapter
6W4
✓ Safe
3.5
W
1.2
adapter
6754
✓ Safe
—
1
adapter
6AX6-G
✓ Safe
—
2.5
adapter
6V3
✓ Safe
—
1.75
adapter
6W5-G
✓ Safe
—
0.9
adapter
EZ81
✓ Safe
—
1
adapter
Generated 2026-04-09
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