2A3 Sylvania JAN CHS Double black plates

…These are Sylvania CHS 2A3 black plates in mint JAN boxes, specially selected to fulfill high US army standards and famous for their build quality and robustness. All tubes are 100% new with strong emission. Perfect printing marks without any scratches. More than 10 pcs with same codes in stock. On above photos is perfectly matched pair, 019 code on backelite base   Click to see All 2A3 TRIODES in stock…

PL509 40KG6 Philips Blackburn

…PL509 40KG6 Philips Blackburn, made in England. True triple mica construction and three holes in plates. “AAA” Philips type code for PL509, B1J2 codes.Triple mica spacers clearly visible on photos above.   Click to see all EL519 6KG6 PL519 40KG6 and other SWEEP TUBES in stock…

ECC83 Telefunken 12AX7

…etails of internal construction of different tubes for the past 30-ish years, I acquired a routine to assess in a few seconds the type and the manufacturer in question. For most of other audiophiles, especially those with not-so-long path into tube rolling, that is a real enigma. The enigma turns into a nightmare as soon as they become proud owners of a “genuine” Telefunken ECC83 DB. Since several years ago, there is a cheap way to fake TFK emboss…

EL34 Mullard 6CA7 Xf3

…le in guiding pin. Almost all printing marks on tubes are perfect! As opposed to many other tube dealers, www.tubes.rs has big stock of many nos types, for example we have more than 100 pieces of EL34 6CA7 Mullard with same codes, and our matched pairs and quads are really “platinum” … Click to see all EL34 6CA7 in stock…

5U4G Sylvania VT-244

…5U4G Sylvania VT-244 black plates, thick square getter in original boxes This is older type with black plates and thicker square getter, much better sounding than later gray plates version and also to black plates same thickness square getter Sylvania 5U4G, C6M DE codes, NOS NIB   Click to see all Rectifiers in stock  …