Sophia Electric™ 12AX7 Tubes -- interchangeable with Telefunken ECC 803S/European ECC 83/US 12AX7


Sophia Electric™ 12AU7 Tubes -- Interchangeable with Mullard ECC 82/GE 12AU7

12AX7 Specification

12AU7 Specification

User Reviews

Not all tubes are created equal.

We cherry picked the best tubes from the production for the US market. Our US engineers further tested these selected tubes and classified them into 3 grades:

Pricing:
Grade A (top 10%): $100 per unit with 30 days warranty, $20 extra for one year warranty.
Grade B (top 25%): $80 per unit with 30 days warranty, $20 extra for one year warranty.
Grade C : $59.99 per unit with 30 days warranty, $20 extra for one year warranty.
Factory bulk (unrated): $49.99 per unit with min order of 10 units.

Sophia Electric 12AX7

Sophia Electric 12AU7

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