Ruby Tubes 5U4 Rectifier Tube

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StewMAX Member Appreciation Event
20% OFF + FREE SHIPPING*
Special offer ends May 9, 2025 at 4:00PM ET

StewMAX Member Appreciation Event
20% OFF + FREE SHIPPING*
Special offer ends May 9, 2025 at 4:00PM ET

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Single Tube Item # 50033 In stock, ready to ship!
$24.93
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*StewMAX Members receive FREE standard shipping on all orders for the life of their membership. Members also receive special pricing on select items, and exclusive offers each month that may include tools, parts or supplies. Learn More

Ruby Tubes 5U4 Rectifier Tube

Classic large envelope rectifier tube.

All Ruby Preamp Tubes are tested by Magic Parts™ for quality assurance and selected for low microphonics and hum. This ensures that even the highest gain tubes will be quiet and dependable. Ruby Tubes come with a 6-month manufacturer's warranty.
California Proposition 65 Warning
Cancer and Reproductive Harm
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