"Hi-End, Not High Priced"

Shuguang Treasure Series

Shuguang is the oldest and largest tube manufacturer in China, established in 1958 by engineers educated and trained in the United States in the 30-40s. Shuguang's vacuum tube production accounts for the world's 40% total tube output nowadays, either under their own brand "Shuguang" or under OEM brands.

Generic Shuguang tubes come in clear glass enclosure. The 'Shuguang Treasure' ® series comes with carbon compound coating inside the tubes making them appearing to be 'black bottle'. They are only released in Dec 2008 to celebrate Shuguang's 50th anniversary and technology advancement.

Find out all information about Shuguang Treasure tubes and test results etc at Shuguang Treasure ™ Vacuum Tubes website

Grant Fidelity is the very first international distributor of Shuguang Treasure series outside of China. All Shuguang tubes distributed by Grant Fidelity comes with standard 30 days warranty plus a 12-month optional extended warranty.