2 Vintage Marconi Canada made Black Plate 6SN7GTB Vacuum tubes!

Please see the detailed pictures


2 Vintage Marconi Canada made 6SN7GTB Vacuum tubes..

Tubes all share the same construction and are made by marconi Canada but each tube features a different branding. 

Tubes feature black plates with bottom D getter. 

Tubes each have current matched balanced plates. Perfect for Hifi. 

Tubes have been tested on a Calibrated Hickok TV7 tube tester and test as follows:

Tube1 : 102.0/106.3

Tube2 : 92.3/92.4

Minimum good value on a TV7 tester for a 6SN7 tube is 50. The tubes test within or near the NOS range.

Tubes are guaranteed to be in good working order upon delivery. If a tube ends up bad within 1 week of delivery just ship it back for a full refund on the bad tube minus shipping costs.

  See pictures for details. 

If you have any questions please email.

I will ship worldwide.

Buyer to pay all shipping costs including brokerage and taxes if any.


I do combine shipping to save you costs!

See my other auctions for more vintage audio gear!

Local pickup in maple ridge BC is also available.

GOOD LUCK!!!!!!!