Ruby

Ruby 12AX7AC5 Preamp Vacuum Tube

Ruby 6L6GCSMTR Power Vacuum Tube

Ruby EL34CZ Matched Power Tubes

Ruby EL84CZ Premium Tube Matched Pair

Ruby 6V6 Matched Amp Tubes

Ruby 6V6GTSTR Power Vacuum Tube

Ruby 6L6GCCZ Matched Amp Tubes

Ruby ECC83/12AX7A Preamp Tube