Shuguang Black Treasure Series 300B-Z Triode Vacuum Tubes

Tube New Shuguang Black Treasure 300B-ZPower Triode, 4-Pin, Black Gift BoxThe Shuguang Treasure series 300B-Z tube is a significant upgrade to the regular 300B both sonically and aesthetically. The 300B-Z has gold grid wires and a black glass bottle to reduce photon interference. This High Polymer Carbon Compound glass coating reduces electron resonance/reflection. Super Alloy technology is also used in their anode material. This material has a very uniform crystal structure allowing much greater electron transfer uniformity and efficiency. Smoother, more detailed and effortless life-like sound results from this high-tech material.