The 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.
Note: Because there is no warm up of a rectifier tube when using this solid state device, it is critical that a standby switch is used that will allow the power tube filaments to warm up before high voltage is applied. This will prevent 'cathode stripping' in the power tubes.
- One year warranty for manufacturer defects
- Safe for all common amplifiers and transformers.
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Standard Version
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| Converts |
Rectifier tubes to solid state
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| Drops Output Power |
Does not drop power
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| Product Manual |
YJR Product Manual87.27 KB
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| Additional Documents |
Product Dimensions21.52 KB
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Select a Yellow Jacket® below to see product details.
