 All items on this page can be purchased using PayPal, please contact us via e-mail, providing your PayPal username, we will in turn send you an invoice.
All valves carry a 90 day warranty and test certificate.
 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 are constructed in clear glass enclosure.
The Treasure
series use a carbon compound coating inside the tubes making them
appear to be 'black bottle'.
This series were released in Dec 2008 to
celebrate Shuguang's 50th anniversary, after 3 years of testing under extreme conditions, Shuguang has
successfully adopted technology in vacuum tube construction to
achieve directional solidification and single crystallization, which greatly
improving the ability of electron emission and electron current
stability.
As a result of Shuguang's 50-years' of expertise in vacuum tube design and production.
- High Polymer Compound Carbon (HPCC) coating is for the first time
used on vacuum tube production. Compared to traditional carbon spray
technology, HPCC coating allows greater concentration of electrons
to enhance and maintain stability of the electron flow,which also maximizes
"secondary electron emission supression" from the glass enclosure,which in
turn reduce effects of electron swirl which can generate internal noises
from the vacuum tube itself.
- 'Super Alloy' technology is used for the first time in
constructing vacuum tubes, this technology is a spin-off from aviation, aerospace, and military usage.
 Surely this is the 300B to beat, this could well be the valve of choice in those exotic single-ended monoblocks, and also a great replacement in push pull designs too.
From the manufacturer responsible for over 80% of 300B's sold worldwide!
 At last a new 2A3 to challenge the ever dwindling stocks, and spiraling prices of vintage 2A3's such as the classic RCA Cunningham
 An ideal upgrade for any amplifier running this fine valve, also a great upgrade for 6550 valves!
Review from "Enjoy the Music".com
 If you are running an amplifier using EL34's, then this is the valve to be looking for, larger glass construction compared to a standard EL34, and with a much bigger sound!
Review from "Enjoy the Music".com
Review from TNT Audio.com
 Just the job for those Quad classic amps or similar, buyers have been raving about how these valves have completely improved on every other KT66 available.
Link to review from TNT.com
link to review from TNT.com [follow up]
 Treasure Series collection by Shuguang.
All models packed in their own individual boxes, factory matched pairs.
Pic' shows the 300B, 2A3, KT88, and 6CA7.
Available in matched pairs, quads or octets.
Review from TNT.com
Link to Shuguang factory tour.
Factory tour from "Enjoy the Music.com"
Link to the Shuguang Audio website.
WARNING!!
It has come to our notice that "B" stock Treasure series are circulating on the internet.
Shuguang "Treasure Series" division are determined to restrict supplies of these valves that have not made the grade for export distribution to mainland China only.
Please bear this in mind when deciding to order from non authorized sources..
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