RCA 6L6GC Black Plate Matched Pair - Used

These tubes are testing a little low/cold and notice the bottles are slightly different. We have adjusted the price because of this. They are still usable and will last quite a while, we will still guarantee them for one year. What is cool about cold tubes is, cold tubes allow more headroom and you still get the great RCA tone! We typically sell an NOS pair of these for $400 so these a great buy for those who are on a budget as well!

Tube 1 @ 400V: 16 mA

Tube 2 @ 400V: 17 mA

Anything between 20-50 mA = NOS

12-20 mA is usable but a little cold. 

• Tube Type / Number: 6L6GC Black Plate
• Manufacturer: RCA
• Country of Manufacturer: USA
• Condition (read below): Used 

About Fuzz Audio

Fuzz Audio is a leading supplier of premium vintage vacuum tubes. We offer a wide selection of NOS (new old stock), and used tubes from leading manufacturers such as Mullard, RCA, and GE. Our tubes are all hand-picked and tested to ensure that they meet our high standards of quality.

• Please read our shipping terms, our testing standards, our return policy (30 days) and our 1000+ great reviews!

We may have many of these tubes in stock. Reach out or send us an offer by multiplying the

Why Buy Fuzz Audio’s Premium Vintage Tubes?

• Our vintage tubes are all individually hand tested by experts on advanced tube testers. This ensures that you are getting a quality product that will work perfectly in your amplifier or other audio equipment.

• We only sell tubes that are read strong to manufacturers specifications. This means that you can be confident that your tubes will sound great and last for years to come.

• Explore your sound and get inspired by our full line of vintage tubes, which all come with their own unique tonal qualities. We have a wide variety of vintage tubes to choose from, so you can find the perfect tubes to match your musical style and preferences.

• Be at peace knowing that Fuzz Audio has your back with a one year warranty covering all tubes we sell. If your tube fails for any reason or goes microphonic within the first year of use, we will replace it for free!

• 30 Day Returns. We are so confident that you will love our vintage tubes that we offer a 30-day money-back guarantee. If you are not satisfied with your purchase for any reason, simply return it for a full refund. No questions asked. 

Do not hesitate to reach out if you have any questions or concerns, we are here to help. We are also happy to make recommendations based on your specific gear and needs.

NOS vs. ANOS vs. Tests NOS (Condition*)

These designations are strictly used to describe the cosmetic condition of our tubes. All tubes we sell test identically, come with 100% life and are guaranteed to work in your device!

If you are picky about owning an original box or wanting a specific logo, please reach out to us before purchasing.

• NOS (New Old Stock) Tubes - are 100% brand new vintage tubes in mint cosmetic condition with show zero signs of use. You should expect a legible logo and clean straight pins. An original box is likely but not guaranteed.

• ANOS Tubes - otherwise known as “almost new old stock” tubes are basically new, but may show slight signs of use in cosmetic condition, such as a missing logo or slightly bent pins. An original box is possible but unlikely.

• Tests NOS Tubes - are used but still operating to specification with 100% life. These tubes are equal in function to NOS valves, yet they cost considerably less because they have cosmetic blemishes. If you plan to disappear your tubes into the back of an amplifier or do not care what the tubes look like, then this is a cost effective choice. Blemishes and cosmetic imperfections do not affect tone…

Logos: Vintage tubes have a wide variety of logos printed on them. It is not uncommon to see a Mullard made tube with an RCA or GE logo, or a GE made tube with a Mullard logo. Your tube may come with a logo such as Heath Kit, Baldwin, Fisher, Hammond, Magnavox, Fender, Gibson, Silvertone, etc. but the true manufacturer of that tube will be correct to your order. If you are looking for a specific logo, please reach out before purchase.

Our Standards:

• All tubes are tested for microphonics and are guaranteed to work in sensitive audio applications.

• All tubes sold are guaranteed to have strong (to spec) NOS test scores with 100% life.

• All tubes are tested on a calibrated Hickok 539C, Maxi-Matcher, E-Tracer or other industry standard tube analyzers.

• Tubes are guaranteed for one year and any tube can be returned within 30 days.

• Preamp tubes are matched by gain and mutual conductance (Gm).

• Power tubes are matched by mA and Gm.

Do not buy power or preamp tubes that have been tested solely on an emissions tester or “tube checker” - this is an inadequate test.

If you have any questions, please do not hesitate to reach out. We would love to hear from you!

Shipping:

• All orders shipped within 3 business days, 90% of orders are processed within 24 hours. Inquire for express shipping. International shipments MAY take a few weeks to arrive.

• Tubes are packed with utmost care. In large sturdy boxes.

Return Policy:

• 30 day returns

 IMPORT TAX

・Import duties, taxes, and other charges which are not included in the item price or shipping charges are the buyer’s responsibility.

・Please check with your country’s customs office to determine what these additional costs will be prior to bidding or buying.

・Except in the case of faulty or damaged items, refunds do not include any return shipping or shipping charges. Your return shipping charge will be deducted from your refund.