NEW ARRIVAL, be the first to give these a try!
Ruby 12AX7 / ECC83 matched trio set X3, in this listing you'll receive QTY: 3 matched tubes.
These are solid standard grey dual plates, with no metal guard on side of plates.
These 12AX7's have been RUBY tested and screened. These 12AX7's will work in any
new or vintage amp. Enjoy!