Tung-Sol Factory Platinum Matched QUAD (FOUR) 7027A Power Tubes
Matched QUAD Tung-Sol 7581A
A set of FOUR factory Platinum Matched Tung-Sol 7027A tubes. These are burned in for 24 hours and then factory matched at real world voltages for current and transconductance. The test results are labelled on each tube box as shown.
These are made in the Xpo-Pul factory (also known as Reflektor) in Saratov, Russia. They are all recent date codes.
All tubes carry the 90 day factory warranty against defects from date of purchase.