KT66 GEC KT88 Genalex Audio Tubes. These are some of the finest audio tubes made. Check for availibility. I usually have some of both the KT66 and the KT88 tubes. KT-66 clear $180.00; smoke $220.00 and the KT-88 199.00 each.
Price: $ 180.00 Shipping: $ 12.00 (U.S.Only, Please email for international rates)