Sylvania 5V3 Rectifier Tube 1960 Black Plates - Tested

Superior Sound Supply selling some seriously special stock. This vintage Sylvania 5V3 rectifier tube is a New Old Stock (NOS) gem, offering the robust power delivery and classic "sag" that vintage guitar amp enthusiasts crave. Professionally tested and ready for immediate installation in your high-voltage circuit.

Technical Specs

• Model: 5V3 (High-current Full-Wave Rectifier)

• Brand: Sylvania

• Condition: NOS (New Old Stock)

• Plate Type: Black Plate

• Testing: Passed on Precision Model 612

• Emissions: Strong "GOOD" reading

• Origin: Made in U.S.A.

Condition Details

This tube is in excellent physical and functional condition. The glass is crystal clear with no signs of internal flashing or darkening. The yellow and gold Sylvania silk-screening is remarkably well-preserved, remaining sharp and legible. The octal base is secure with straight pins, ensuring a tight fit in any standard socket. It comes housed in its original Sylvania box, which has protected the unit for decades.

Historical/Technical Context

The 5V3 is a heavy-duty rectifier from the 5AU4 family, prized for its high current-carrying capacity. In the world of tube guitar amplifiers, it is a favorite for those looking for reliable performance combined with the characteristic voltage compression (or "sag") that provides a more touch-sensitive playing experience. This American-made Sylvania variant is widely considered superior to modern production alternatives in both longevity and tonal character.

Superior Sound Supply Guarantee

Superior Sound Supply Quality Assurance:

Transparency and accuracy are the cornerstones of our business. We ensure every component is vetted so you can buy with complete confidence. Along with Superior Supplies for all of your sounds, We stand on Superior Service, If your not satisfied with our supply we will make it right.

Shipping: Carefully packaged with consistent methods that are proven to protect your item and ensure safe delivery. We primarily use USPS, and FedEx for large or high-value items, and can arrange international shipping to anywhere in the world. Orders are processed and shipped within 1-3 business days of payment clearance. We do not ship on weekends or federal holidays. Orders placed after 2:00 PM CST Friday will ship the following Monday.

Returns:

• New Items: Returnable within 30 days of delivery.

• Used & Vintage Items: Returnable within 30 days of delivery.

General Terms

Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described. Make sure to check the return policy on each individual listing as some items may be sold "As-Described" and not eligible for a return. We want you to be completely satisfied with your purchase.