# Vacuum Tubes

The first electronic amplification of sound was done with Vacuum Tubes. We have pre-amp, power and rectifier vacuum tubes among other types in New Old Stock from the golden era of American & European manufacturing as well as current production tubes from today.

Yellow Jackets - Yellow Jackets allows amplifiers using common power tubes to use EL84s without modification or rebiasing.
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 P-YJRItem ID: 003636 Solid State Rectifier - Yellow Jackets® YJR, For 5AR4, 5U4, 5Y3The YJR is a direct plug-in replacement adapter for use in most amplifiers that use 5AR4/GZ34, 5U4, 5Y3 or similar full-wave rectifier tubes. The YJR converts your amp's vacuum tube rectifier to a solid state rectifier, reducing tube sag for a tighter sound and feel. The tube rectifier can easily be swapped back in when sag is desired. This Yellow Jacket® is a solid state device and as such does not come with vacuum tubes. Converts most audio amplifiers which use a vacuum tube rectifier 5AR4/GZ34, 5U4 or 5Y3 to a solid state device.Safe for all common amplifiers and transformers. All Yellow Jackets® have a one year warranty against manufacturer defects. $14.95$13.31You save: 11% Qty: * Click to read more
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