JJ EL34CZ tubes with great tone and lots of power. Very dependable. Bold bass, thick mid-range. Good high-end, not too bright. Great for the classic rock n' roll sound.

All RUBY™ Tubes come already Matched with a 6 Month Warranty. There is no extra charge for this service. Our Magic Parts matching process is very exact and our tubes are matched within +/- 1 mA (mille amp) of each other.

All Ruby Tubes are pre-sorted, tested, and burned in. You can count on these for quality assurance!

6 month warranty on all tubes.