Shuguang Treasure 2A3-Z

The Shuguang Treasure series 2A3-Z tube sounds fantastic and looks great too. Consider by many to be the best currently produced 2A3 tube.

This 2A3-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 of 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 2A3-Z tube is their premium export grade and purchased direct from Shuguang in China.

Other Shuguang Treasure tubes       2A3 Types


Availability: Usually ships within 24 hours.

SH-2A3-Z$429.95Price is for a matched pair.