The Fisher 7189 6550 gematchtes Golden Dragon 6550 Röhre Philips EL34 Sovtek EL34G Orion EL34 6CA7 Shuguang 300B Shuguang 300B S TAD Tube Amp Tesla E34 L Ruby Tubes KT88 RFT EL34 Fullmusic 300B Svetlana KT88 Telefunken EL84 Golden Dragon Welter EL34-S Valvo E84L Fullmusic 300B Philips 6550 Röhre KT88 Röhre Electro Svetlana 6550 C 5881 gematchtes Ruby Tubes Welter EL34 Electron EL-34 EL34 Röhren Valvo PL36 Audio Research Tube Audio Bonn AEG EL34 Sovtek 6550 WA Audio Research JJ Electronic Precision EL 34 RSD EL34 Valvo EL84 JJ Electronic Audio Research Svetlana KT88 Audio Research Orion EL34 6CA7 Shuguang