This pair is well matched and tests very strong. Fully tested on a TV7BU. Minimum good is 32.
1 NOS RCA 12AX7A ECC83 12AX7 USA Amazing sound
The product is a NOS RCA 12AX7A ECC83 12AX7 vacuum tube, manufactured in the United States. Known for its amazing sound quality, this tube is a sought-after vintage audio component with RCA control over the heater, low-noise characteristics, and a non-microphonic design. Ideal for vintage audio enthusiasts looking to enhance their sound system with a high-quality, American-made tube.