Up for sale is an exceptionally matched pair (2 pieces) of vintage RCA 5Y3GT full-wave rectifier tubes, brand new in their original factory red RCA boxes. Made in the USA, these iconic tubes feature robust black plates and black octal bases with crisp orange RCA branding. Revered by guitar amp enthusiasts and audiophiles alike for their classic natural compression, ultra-reliable power delivery, and warm vintage tone in classic Fender amps and Hi-Fi power supplies.

As shown, both tubes have been thoroughly tested on our laboratory-grade Amplitrex AT1000 tube tester. Forward voltage drop (FWD) and reverse breakdown voltage (REV) metrics for both internal diode sections are detailed in the table below.