Telefunken vs RFT - German NOS Quad Listening Test
9:13
Tube Talk - German made ECC83/12AX7 (Telefunken, Siemens, RFT)
12:11
Vintage Mullard and Tungsram Dual Tubes 6CG7 Listening Test
20:29
MASSIVE 12AX7 TUBE SHOOTOUT! NEW, NOS, 21 TUBES!
10:14
Ray Select KT-88, 12AX7, 12AU7 Tubes Review
19:50
Optimiser son système HIFI ?
23:12
Pourquoi l'Allemagne a perdu le ciel
22:28
Tube Labe #126 - RFT ECC81 / 12AT7
8:50