Ruby 12AX7AC5 Preamp Vacuum Tube (Matched)

The Ruby Tube 12AX-7 gave me a quick noticeable gain compared to the factory tube in my Blackstar 10.

I like them and use them in a lot of my amps; they sound good and are very quiet. Great tube for high-gain amps.

It really made my Bogner 50 watt Ecstacy come alive! Rich in harmonic content and loaded with depth and clarity. Fast shipping.