2x Telefunken EF804S Matched Pairs - ◇ Bottom - Ulm 1968-69 - Strong

Pair 1 - Yellow Tip Model: 1968 Telefunken EF804S (Made in Germany) Soundlumia Tube Sound Rating: 9.5/10 - Outstanding  1960s Ulm, Germany production - Unparalleled sound characteristics and superb build quality - True holographic sound stage with layered details and ultra clarity Date codes:  U5218104 (U = Ulm, Germany, 8 = 1968)  U1118104 (U = Ulm, Germany, 8 = 1968)  GM (Mutual Conductance) test result: 80%/83% of NOS/NEW Silkscreen: 90% - 100% Packaging:  This pair of tubes will be packaged in NEW reproduction Telefunken tube boxes, secured by a handmade paper ribbon (by courtesy of Soundlumia.) Professional Tube Testing NO shorts, leakage or gas. NO noise or microphonics. This tube tested Strong (80%+ mutual conductance value for NOS/NEW) on a reliable Mercury 2000 tube tester with the following result (mutual conductance both in uMhos and in percentage of NOS/NEW value):  Tube 1: 2,000 (80%) Tube 2: 2,080 (83%) Good tubes start at 1,200