Description

This is a very nice pair of NOS (new old stock) RCA 5692 tubes. They feature the popular red base, black plates, a third mica level and support rods. They also have a matching 1964 date code of "6435". The transconductance (Gm) test results are very balanced (see pictures for measurements) and at NOS spec! TESTING: The tube(s) in this sale have been tested on an Amplitrex AT-1000 tube tester (fixed-bias mode), which is a laboratory-grade tester capable of supplying the user with precision measurements. It tests for heater-cathode leakage, gas, mutual conductance, and plate current. Please note that no tube testers are identical and my test results will likely differ slightly from yours. RETURNS: I will gladly take your tube(s) back for a full refund if you're unhappy for any reason. Yes, it's that simple! Please note that I reserve the right to issue partial refunds if tubes are missing, damaged, or without original boxes (when applicable). OTHER TUBES FOR SALE: I have many premium tubes for sale and will combine shipping if you buy multiple items. Click the links below to see what else is available! Audio Preamp Tubes (12AX7, 12AY7, 6SN7, 6DJ8, etc) Audio Power Tubes (6V6, 6L6, 6550, EL34, etc) Audio Rectifier Tubes (5Y3, 5U4, GZ34, etc) Radio Transmitting Tubes (6146, 811A, 3-500Z, etc) Other Tubes and Accessories (eye tubes, Nixie tubes, CRTs, sockets, etc) Wholesale Tube Lots (buy in bulk and save... great for resellers!)