Are you looking for a premium KT66 tube for your vintage Quad II mono blocks? Consider the Shuguang Treasure series KT66-Z tube. This KT66 sounds fantastic and looks great too.
The KT66-Z tube's construction features gold grid wires and a new internally coated black glass bottle. This unique HPCC coating is known as High Polymer Carbon Compound glass coating and is unique for its ability to reduce stray electron emission that can otherwise reflect off the glass. Shuguang also uses their new "Super Alloy" technology. Originally applied to aviation, aerospace, and military applications, this technology has been successfully used by Shuguang to accomplish directional solidification and single crystallization. This greatly improves the ability of electron emission and electron current stability. This new Shuguang Treasure series required additional parts selection quality control processes, improved vacuum techniques and additional burn-in time and testing. This Shuguang Treasure KT66-Z tube is their premium export grade and purchased direct from Shuguang in China. Other Shuguang Treasure tubesKT66 Tube Types
Additional Information and Downloads
Tube Matching Information: These tubes are packaged in boxed sets of two (matched pair). You need to order "2" tubes to receive this boxed set. If "Single - White Boxed" option is selected we will send un-matched tubes in the quantity ordered.
Warranty Information and Return Policy
Warranty Period: 3 months
All our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization - return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.