Matched Pair RCA 5Y3/GT Rectifier Guitar Amp. / HAM Audio Vacuum Tube Valve- Ban
Type Full Wave Rectifier. similar 5V rectifier tubes of both higher and lower current: 5V3, 5W3, 5X3, 5Z3, 5U4, 5Z4, GZ32, and GZ34. RCA - Red Print. Platinum Matched (within 1%). Fender Tweed Deluxe.