Tung-Sol 6SN7 Preamp Tube 1950s USA - Tested

Superior Sound Supply selling some seriously special stock. This is a genuine New Old Stock (NOS) Tung-Sol 6SN7GTB, preserved in its original box and featuring the highly sought-after black triangular plate construction. Professionally tested on our Precision Model 612, this tube offers the robust, linear performance that Tung-Sol is famous for, making it a premium choice for high-fidelity preamps and vintage audio restoration.

Technical Specifications

• Brand: Tung-Sol (Made in USA)

• Model: 6SN7GTB

• Date/Factory Code: 322DH3 (EIA 322 = Tung-Sol)

• Plate Construction: Black Triangular / Angled Plates

• Getter: Top D-Getter

• Test Results: Tested for Shorts, Opens, and Leakage. Both triodes showed 90% Emission life.

• Noise Test: Passed for microphonics

Condition Details

This tube is in exceptional cosmetic and functional condition. The glass is clear with no smoky deposits, and the silver "Tung-Sol" branding is crisp and fully intact. The black phenolic base is solid with no cracks, and the pins are straight with only minor vintage oxidation consistent with age. It comes in its original blue and white Tung-Sol carton, which is crisp and clean.

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.