6BQ5/EL84 Telefunken NOS strong tightly matched pair (2) tube lot MaxiMatcher 2 #1) 36.0 ma 8.0 mMhos#2) 35.5 ma 8.0 mMhosTV-7#1) 82 min 50#2) 78 min 50

Technical characteristics and electrical parameters of the 6P14P-K lamp:Filament voltage 6.3 ± 0.6 VFilament current 760 ± 60 mANominal anode voltage (constant) 250 VAnode voltage limit 300 VAnode current 48 ± 8 mACathode current limit 65 mAGrid voltage second rated (constant) 250 VGrid voltage second limit (constant) 300 VThe second grid current is not more than 7 mAPower dissipated by the anode, limiting 14 WThe power dissipated by the second grid, limiting 2 WLimit voltage between cathode and heater (constant) 100 VSlope 11.3 mA / VThe gain in a triode connection is about 20Internal resistance 30 kOhmResistance in the cathode circuit for automatic bias 120 OhmInput capacitance about 11 pFOutput capacitance about 7 pFPass-through capacitance about 0.2 pFGlass miniature decoration

Technical characteristics and electrical parameters of the 6P14P-K lamp:Filament voltage 6.3 ± 0.6 VFilament current 760 ± 60 mANominal anode voltage (constant) 250 VAnode voltage limit 300 VAnode current 48 ± 8 mACathode current limit 65 mAGrid voltage second rated (constant) 250 VGrid voltage second limit (constant) 300 VThe second grid current is not more than 7 mAPower dissipated by the anode, limiting 14 WThe power dissipated by the second grid, limiting 2 WLimit voltage between cathode and heater (constant) 100 VSlope 11.3 mA / VThe gain in a triode connection is about 20Internal resistance 30 kOhmResistance in the cathode circuit for automatic bias 120 OhmInput capacitance about 11 pFOutput capacitance about 7 pFPass-through capacitance about 0.2 pFGlass miniature decoration

A collection of three circa 1959 Dynatron LF13 valve amplifiers and two pre-amplifiers and some other parts. Basically complete without the EL84 and ECC83 valves which are somewhere else. These were part of my collection to turn into two valve monoblocks back in 2019 as per the video on Youtube. When lockdown occured everything of mine was put into storage and Ive only just started looking through it all before emigrating abroad. These would make a stunning project for someone looking to have two vintage monoblocks and a fun project. Dynatron valve amplifiers are collectable and highly regarded.