High-gain EL34 with dynamic, well-balanced tone—loud and clear.
All Ruby Power Tubes are matched using the Magic Parts™ matching process, and the base of the tube is labeled with the plate current and transconductance matching measurements. By matching these parameters, optimal performance and long life are ensured for your amplifier. Ruby Tubes come with a 6-month replacement warranty.
For plate voltages higher than 450 VDC, use the Ruby EL34BHT's.