Tube Audio Bonn TAD Tube Amp Svetlana KT88 Orion EL34 6CA7 Valvo EL84 Audio Research Electro Golden Dragon RFT EL34 Ruby Tubes Hoges EL12 375 Audio Research Orion EL34 6CA7 Golden Dragon Philips EL34 Sovtek EL34G McIntosh KT88 5881 gematchtes Sovtek EL34G Ruby Tubes KT88 KT88 Röhre Audio Research Valvo EL34 AEG EL34 General Telefunken EL84 Siemens EL84 RSD EL84 Sovtek 6550 WA V.A.L. 300B RSD EL34 Svetlana 6H13C Sovtek 2A3 Svetlana 6550 C Ruby Tubes EL84 Audio Research 6550 Röhre Welter EL34-S The Fisher 7189 RCA 2A3 Pope EL34 Röhre GEC KT66 Philips ECG Svetlana EL34 Philips Philips ECG