Scarce pair of Spanish Marconi 12AX7 silver plate tubes. Very similar in construction to the more common Mazda silver plates. Slotted design, disc getters. Test results as shown in the table below from the Amplitrex AT1000.
Scarce pair of Spanish Marconi 12AX7 silver plate tubes. Very similar in construction to the more common Mazda silver plates. Slotted design, disc getters. Test results as shown in the table below from the Amplitrex AT1000.