Shuguang just released their Psvane line of HIFI vacuum tubes. This new line includes both power and signal tubes, and seems to cover the tubes not included in their Treasure line. I am currently talking with Ian and Rachel from Grant Fidelity who is the authorized distributor for the new tubes on how they compare to other brands and lines. I'm going to try to get my ears on some as they are sexy looking tubes, and if so I'll report. :D
After launching the 50 year anniversary Treasure series in 2008, Shuguang has been developing new additions to its high end tube line to include large power tubes and small preamp tubes. With venture capital from UK and countless testing by Shuguang's Treasure design team, a new series called "Psvane" (pronounced as 'Pavane' - the brand is created from the inspiration of the 17th century classic music dance) Reference T-series has born in Aug 2010.
The Pavane T-series now include the following models: 845, 805, 211, 12AX7, 12AU7, 12AT7 and EL84. They are great compliment to the hugely successful Treasure series which includes the common EL34, KT88, KT66, 300B, 2A3 and 6SN7.
* Dramatically increased sound quality over the standard Shuguang tubes
* Gold coated pins to enhance connection over long term
* All parts are selected to the highest grade plus only highly experienced workers to assemble
* Suggested burn-in time is 75-100 hours
* 30-days manufacturer's warranty from date of purchase