Description
Our most popular 12AX7A tube.
All Ruby pre-amp tubes are properly tested for quality assurance.
Our highest quality 12AX7A tube.
Vacuum tubes provide a natural form of compression that solid-state amplifiers simply cannot match. Their ability to handle overload gracefully and their inherent non-linearity make them a popular choice among musicians and audiophiles alike. While they may require more maintenance and be more expensive than solid-state amplifiers, the natural warmth and character they provide are well worth it for many people.
HG Grade: RUBY standard grade that will work in all positions in an amplifier except in very high gain circuits, usually the first gain stage in a combo amplifier.
HG+ Grade: For use in high gain circuits ***OUT OF PRODUCTION***
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