MATCHED PAIR BY GAIN E88CC/6922 ZAERIX GOLD PIN  TESTED WITH ROETEST V10  NEW                                       
Zaerix was the brand name of a company called Z and I Aero Services, an important suppliers to government and military contracts.  They did not make valves themselves but they did source high quality valves from manufacturers around the world and ensured they met their high standards.     

Buyer will receive the exact tube seen in photos.
  
Tested With Roetest V10 By GAIN NOS/NIB

The gain is the parameter that mostly affect what we hear from a preamp/amp. Using tubes with the same gain lead to same sound level from each channel. 

We removed tubes close to inferior and superior limits.

 For tubes matched by curves or by Ip and Gm please see our other listings.

The tubes passed all quality checks  - vacuum, shorts, leakage, heater current etc.

                         
                                                                     

Please allow for the following shipping times:

EU countries: 5-8 business days, on rare occasions a few days more
USA: 10-15 business days, on rare occasions more
South East Asia (Japan, Singapore, S. Korea, Hong Kong, Taiwan etc) 10 business days, on rare occasions more
India, China, Russia, Kazakhstan, Pakistan, Indonesia, Malaysia, Thailand, Australia, South Africa etc: at least 15 business days, but frequently around 25 business days
 
Please note that shipping cost is calculated at average. If you have any objections please contact me for a specific quotation.