Amplifier Parts

Ruby Tubes - 5Y3GT

5Y3GT is an octal rectifier diode with a true directly heated cathode. Expert-designed for ultimate reliability and efficiency, this octal rectifier diode boasts a true directly heated cathode to deliver dynamic and robust performance. All Ruby Tubes...

Ruby Tubes - JJ 5U4

Upgrade your audio and instruments with the reliable JJ 5U4 Rectifier Tube.  Benefit from clean AC/DC conversion at an affordable price.  Perfect for both Hi-Fi audio and instrument amplifiers.  Experience superior performance in any 5U4...

Ruby Tubes - JJ GZ34S / 5AR4

The JJ GZ34/5AR4 Rectifier Tube is a cost-effective and reliable replacement for amplifiers using GZ34/5AR4 tubes. With its high-quality construction and exceptional sound, this tube is a great choice for any amplifier. Upgrade your equipment with this...