Matched Pair

5R4GYB

RCA

Vacuum Tubes

Smooth Black Carbonized Plates

Top Side Rectangle Getters

Tested 1000+/990 and 1000/990

on a Paul Hart calibrated & modified Westmore 501 (Triplett 3444) tube tester.

Triplett tests rectifiers under load (the best test) & indicates whether they test correctly or not - no GM on rectifiers. Test results given are from the 1000 scale for comparison. Good aligns with 600.

Test results will differ between various testers for many reasons such as technical design, aging components, etc. So while test results are a good indication of quality there can be some difference between the many differently designed & maintained testers.


*For Multiple item purchases click the "Add to Cart" selection for each item
*After all items have been added to your cart click on "Request Total From Seller"
*An invoice will be returned with the correct 'combined shipping' & total due when I next check my ebay account

*If your purchase is not fully satisfactory please contact me .

  • International customers welcome: Please do not ask for false value on the customs form
  • For combined international shipping you need to send an email listing the items you want to buy and I will create a single listing for all the items that you can buy with the corrected shipping charge

  • Tubes will be shipped in a cardboard box with packing, usually bubble wrap or sheet foam
  • Packed for protection
  • Packed for ease in unpacking
  • Tubes will generally be cleaned
  • Clean tubes will radiate heat better & operate cooler
  • Pins will generally be straightened/cleaned as needed
  • Cleaned pins make better electronic connection
  • Most tubes are shipped in their boxes (or replacement boxes)
  • I often repair a box so it will function properly
  • I try to get your package in the next mail after receiving your order.