1x Tungsram GZ34 Valve Tube NOS NIB f32 Eq 5AR4 CV1377 Mullard Blackburn

1x Tungsram GZ34 Valve Date Code: f32 B1F3. Manufactured by Mullard (Blackburn factory). Tested by AVO VCM Tester.

D1 = 90, D2 = 90 GOOD begins at 53 This valve has also been tested in amplifier without any noise.