Rolling Candidates to replace 12AX7

Small Signal Triode — Noval

Drop-In Replacements

✓ ECC83✓ ECC803✓ ECC803S✓ 7025✓ 12AX7A✓ 12AX7WA✓ 12AX7S✓ M8137✓ CV4004✓ CV492✓ B339✓ B759✓ 5721✓ 6057✓ 6681✓ 7729✓ 12DF7✓ 12DT7✓ E2164✓ 6L13✓ 8339✓ E83CC

Top 10 Picks

12AY7drop-in

12.6V✓ Safe

5751drop-in

12.6V⚠ Low Pa

12SF5adapter

12.6V✓ Close

12SC7adapter

12.6V⚠ Low Pa

Rolling Candidates (27)

Heater:

Fit:

Status:2 shown (target 12.6V only)

12.6V Heater(2 candidates)

	Tube	Status ↑	Pa	Ah	Fit
	12SF5	✓ Close	—	0.15	adapter
	12AY7	✓ Safe	1.5W	0.15	drop-in

Generated 2026-04-09Status legend →User Guide →Rolling FAQ →

target +0 selectedpick 1+ to compareselect 1+ candidate to compare