Incredible high quality japanese made by Hitachi 5U4GB branded as National. Why buy new production with inferior materials at a higher price when you can get incredible workmanship performance with NOS tubes? Just $29.99 per tube!
1 piece left in stock supplied in white box. General Electric made GZ34 are rock solid USA made construction and sound excellent. These GE versions of the 5AR4=GZ34=CV1377 have copper lined anodes and are extremely durable.