Shuguang Treasure CV181-Z

The Shuguang Treasure Series CV-181Z tube is a unique take on the 6SN7 tube. Unlike a NOS CV-181 tube, the Shuguang CV-181-Z tube is a safe replacement in any 6SN7 circuit. It is not identical to the NOS CV-181 tube. However compared to other 6SN7 tubes, the Shuguang Treasure CV-181-Z tube has a much larger "ST" style bottle. The beautiful ceramic base is over-sized as well, measuring 1 3/8" (35mm) in diameter. Many folks report that the sound quality rivals that of the best vintage 6SN7 tubes.

The CV-181Z tube's construction features a ceramic base, gold grid wires and pins, 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 6SN7 type required additional parts selection quality control processes, improved vacuum techniques and additional burn-in time and testing. This Shuguang Treasure 6SN7 type is their premium export grade and purchased direct from Shuguang in China.

Please Note: Due to packaging these tubes are not available as singles.

Other Shuguang Treasure tubes

6SN7 Tube Types

Availability: Usually ships within 24 hours.