The Ruby 12AT7C is a new tube from China and is a High Grade Tube selected it for Low Noise and good Gain.
The Ruby Chinese 12AU7 is a High Grade Tube selected it for Low Noise. Less gain well balanced.
The Ruby 12AX7AC5 HG is their most popular 12AX7A Tube, high quality, sweet sounding, warm tone and low noise.
The Ruby 5AR4 GZ34 Rectifier is the highest quality Chinese tube, a popular favorite GZ34 on the market.
The Ruby Tube 6550ASTR is a new remake of the GE6550, with tough, straight glass.
The Ruby 6L6GCMSTR is their best 6L6GC Tube. Full sounding with good power. A rugged copy of the Phillips STR tubes.
The Ruby Tube 6V6GTSTR is a new and improved 6V6GT from China.
The Ruby Tube EL34BSTR is a newly developed High GainEL34 designed by Ruby and made in China.
The Ruby Tube EL84C Chinese made 6BQ5/EL34
The Ruby Tube KT88STR is an entirely new KT88. Built in the style of the early British KT88.