About This Ruby 12AX7 Preamp Vacuum Tube 4 Pack
This is a 4 pack suited for modern amps with a 4 Preamp Tube stage - for V1 and V2, Tone Stack and Phase Inverter positions.
The Chinese Made Ruby 12AX7 tubes (made at the Shuguang Factory) are popular with Marshall (and similar amps) owners for its gain and bite. They are the tubes that are already found in a lot of amp brands on the market for their sound and reliability.
Model: RUBY12AX7 4PK