Genalex Gold Lion 12AX7/ECC83/B759 Preamp Vacuum TubeHi FiNever before has a preamp tube better reflected the Genelex Gold Lion ideals of perfection. Combining the purest raw materials, this Genelex Gold Lion B759 ECC83 12AX7 tube has been designed with dual oversized plates, noise canceling spiral wound filaments, thick structural mica spacers, and gold plated contact pins. These features provide solid low end response coupled with an articulate midrange and delicately warm high end tonality.