Warranty & Return

--- NEW OLD STOCK (NOS) or NEW IN BOX (NIB)  tubes are new manufacturer's tubes in original boxes.
--- NEW BULK (NB) tubes are new manufacturer's tubes from bulk crates as supplied to manufacturers of equipment; there are no boxes. Some tubes are from unused military modules.
--- USED TESTED (UT) tubes are tested by us to 80% of original manufacturer's specification.
All our tubes are tested by us prior to packing on our Stark, Hickok, AVO, Simpson or RF Laboratories Inc. calibrated testers. Tube matching is accomplished on our calibrated  Amplitrex AT1000 or Radioelec Duovac testers.
All photos are typical of available stock; please read decription for full details. 
If you are not happy with our tubes, please return them to us in original condition with boxes, for full refund minus shipping and matching fees.