Vacuum Tube Amplifier Basics

Electro-Harmonix 5U4GB EH Vacuum Tube

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Their brand new 5U4GB! Electro-Harmonix is rocking the vacuum tube community with the superior quality of the "EH" series tubes.

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Product Review

Their brand new 5U4GB! Electro-Harmonix is rocking the vacuum tube community with the superior quality of the "EH" series tubes.

Exact duplicate of the famous RCA 5U4GB Black Plate
Great quality and sound at a bargain price.
Perfect for all vintage and modern amps
Excellent materials used for long life and durability. Able to handl voltages up to 1500Vdc
Slim bottle design for amps with tube clearance issues

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Vacuum Tube Amplifier Basics