On sale is one matching pair of National Union USN CNU 6SN7GT Military grade vacuum tube. Both tubes were made in the 40’s and coded GU and on their bases. Their Trans Conductance percentage have been tested by a TV-2/CU tube tester, the readings were 96/99 and 95/96 out of 100/100. Tubes have been sound tested by a 300B SE power amplifier, they sounded clean, details, focus, spaces and no issue at all, these tubes are very fine, special for Head Phones and Pre-amps.
Tubes come with 7 day trial period; refund will be the price of the tubes only. Buyer pays all shipping. Please check pictures and ask questions.
The rating of condition is based on the test reading. For more information, please visit www.tasaudio.com.
Shipping cost is $9.00 for the inner 48 states via USPS Priority. Outside continental US rates vary.
Insurance is optional.
For international buyer, please contact us before any offer.
NEW YORK residence need to pay 8.875% tax