Description Electro Harmonix 5U4GB Superior directly heated rectifier Diode. Replacement for all 5U4 types, including NOS-style “big bottle” tubes. Straight bottle classic design fits more applications Perfect for dual rectifier amps Excellent choice for both Hifi and instrument amplification Made In Russia Electro Harmonix tubes are all new designs and are of excellent quality. Many OEMs use relabeled Electro Harmonix vacuum tubes in their amplifiers. If you want great sounding tubes at a very reasonable price, then Electro Harmonix tubes should be on your list. Electro Harmonix 5U4GB Data Sheet
