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Early Russian 6H8C / 6SN7


Product Description

Russian 6H8C/6SN7 - 1960's vintage. These are sooooo cool. I got these from a guy who actually found them in a warehouse in Brazil... in the jungle. When I opened the musty boxes, I felt so much like Nikita Kruschev I almost started pounding my shoe on the table! Low noise and microphonics, great air and detail, excellent bass. Not as thin sounding as some of the later production 6H8C tubes you see being used as stock tubes in some gear.

Platinum grade - The best of the best. Lowest noise and microphony with the tightest triode balance we have available. This is typically 10% or tighter, but may be higher depending on available stock.

Gold grade - Low noise and microphonics with a triode balance typically between 15% and 20%, but may be higher depending on available stock.

Driver grade - Lowest noise but not the lowest in microphony. Triode balance will be similar to Gold grade.
This grade is only suitable for use in the driver stage of an amplifier, or the output/buffer stage of a DAC or CD Player.

Click here for a more in depth discussion on how we grade tubes.

Logo quality may vary from picture above. Price includes matching in any quantity you need at no extra charge.

Warranty Information

Vacuum tubes are warranted for 90 days against defects, except in cases of abuse, and replaced with like-item only.

Vacuum tubes are warranted for 90 days against defects, except in cases of abuse, and replaced with like-item only.

  • Tubes being sent in for warranty must have a return authorization number from Upscale Audio. This RA number must be written on the outside of the box. Please also include a note in the box that has your name and telephone number, and please explain the issues with the tube. If this information is missing it will delay the shipment of your replacement tube.
  • Vacuum tubes being sent to Upscale Audio for warranty replacement must be shipped in a box with appropriate packaging to keep them from being damaged. Vacuum tubes returned to Upscale Audio using inadequate packing will have a voided warranty and will be refused at the customer's expense.

Exceptions to our warranty policy are as follows:

  • Upscale Audio reserves the right to refuse warranty at our disgretion based on the equipment being re-tubed. You will be notified of any change prior to your order being processed.
  • Using a tube in an application in which it was not meant to be used. If your amp calls for a 6550, and you decide you want to plug in a 6V6GT, Upscale Audio is not liable if the tube fails, and will not honor any warranty in such a situation.

Upscale Audio is not liable for any damage or injury caused by the improper use of its tubes or the use of an incorrect/incompatible tube type. If you are unsure of what tube or tubes your equipment uses, consult the manufacturer before making a purchase. Using an incompatible tube type may cause severe damage to your equipment and will void your tube's warranty.

vacuum tube returns for refund:

Vacuum tubes are electronic parts and are not refundable under any circumstances.

Product Reviews

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    Posted by Horacio on 9th Jan 2015

    Bought these along with the KT88 Gold Lions. They make a great combo back up with the brimar 12ax7 c4004. I have in 6sn7 raytheons, RCA bottom getter and Sylvania gtb found that I like the russian and gold lion to be the combo that I am most pleased with.Thank you Upscale audio for selling me Quality tubes. It is just to bad that I am the type of person who thinks there might be something else out there that I might be missing, so I experiment, not a bad thing if you share your results.