The 7729 is a premium, low-noise industrial version of the standard 12AX7 vacuum tube. Standard 12AX7 tubes can vary wildly in background noise, hiss, or microphonic ringing.
The 7729 is a premium, low-noise industrial version of the standard 12AX7 vacuum tube. Standard 12AX7 tubes can vary wildly in background noise, hiss, or microphonic ringing.