shuguang 12AT7-T Hi-end premium vacuum tubes Vacuum tube Best Matched Pair

All items guaranteed 100% BRAND NEW in the original edition Box.
ONE-YEAR WARRANTY !!!

Features:
1. The pins and sockets of the Sound of Nature series are all plated with real gold (24K). They can withstand salt test experiments, and will not fade or fade in ten years, and have good electrical conductivity. The sound characteristics of the original tubes are completely maintained and surpassed. Each tube is precisely tested and strictly matched.
2. The high-frequency is exquisite and gorgeous, the middle-frequency is thick and full, and the low-frequency is strong and powerful.