Sophia Electric 12AX7 Tubes: Interchangeable with Telefunken ECC 803S/European ECC83
![Sophia Electric 12AX7 Tubes: Interchangeable with Telefunken ECC 803S/European ECC83](http://sophiaelectric.com/cdn/shop/products/12AX7_{width}x.jpg?v=1546528407)
Pricing:
Grade A (top 10%) : $125 per unit with 30 days warranty, $29.99 extra for one year warranty.
Grade B (top 25%) : $100 per unit with 30 days warranty, $29.99 extra for one year warranty.
Grade C : $79.99 per unit with 30 days warranty.