"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.

If you are intrigued to have a tour of Shuguang tube manufacturing, here is a link on our forum: Shuguang Virtual Tour

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. The tubes sold by Grant Fidelity carry Grant Fidelity logo on the glass enclosure to ensure authenticity and quality.

Grant Fidelity is also the owner of 'Shuguang Treasure' trademark in North America (USPTO serial number 77888213). Any parties who are not authorized to use 'Shuguang Treasure' trademark by Grant Fidelity in writing will be prosecuted under North American trademark law. Buyers who purchase from unauthorized sources please be aware that your purchase may be forfeited at customs at importation as Grant Fidelity will regularly report unlawful importation to USA and Canadian customs to protect our legitimate right under the Trademark Laws.

Important Readings!  About Chinese vacuum tube production and distribution: 

1. Are all vacuum tubes created equal? 

2. Grant Fidelity 5-step 5-spec QC on vacuum tubes

3. Should I buy Shuguang Treasure tubes from Grant Fidelity?