Ruby Tubes

June 1, 2010 Replacement Ruby vacuum tubes
Audionova to start selling Ruby 12AX7AC5 HG+ pre amp tubes.
Audionova will start selling the Ruby Tubes 12AX7AC5 HG+ pre amp tube. This is a fifth generation HIGH GRADE PLUS tube that is ideal for both high gain guitar amps and expensive recording mic pre amps that use tubes in the input stage. The PLUS designation is for low microphonics. Canada only.

 Replacement Ruby vacuum tubes