Ruby Tubes KT88 6550 Röhre Philips ECG Tesla E34 L JJ Electronic RSD EL84 Electro Audio Research Svetlana KT88 Hoges EL12 375 Precision EL 34 JJ Electronic Electron EL-34 AEG EL34 JJ Electronic Ruby Tubes KT88 JJ Electronic Fullmusic 300B KT88 Röhre EAT 300B Röhren JJ Electronic The Fisher 7189 6550 gematchtes Tung-Sol EL34 B Svetlana 6H13C Mullard EL34 Philips ECG Tube Audio Bonn Orion EL34 6CA7 RSD EL34 TAD Tube Amp Svetlana EL34 Siemens EL84 Pope EL34 Röhre Audio Research Welter EL34-S Svetlana 6550 C JJ Electronic V.A.L. 300B Electro Sovtek 6550 WA Welter 6550 A-S McIntosh KT88 KT88 Röhre Valvo PL36 Valvo EL84