Quality Tubes from JJ Electronic If you're looking for tubes that are consistently reliable and offer rich harmonic response, Sweetwater has a great match for you! JJ Electronic tubes are synonymous with high quality and dependability, in addition to being known for offering warm, premium tone at an affordable price. Many amp manufacturers across the globe rely on JJ tubes to achieve their ideal sound, making them one of the most reputable names in the industry.JJ EL-34 Platinum Matched Pair Power Tubes Features: Premium quality matched tubes for best possible performance Reliability and sonic richness