EL34 AEG Tube Push-pull Stereo Power Amplifier Dynaco ST-70

EL34 AEG Germany TubePush-Pull Stereo Power Amplifier using Dynamo ST-70 modified circuit as shown in photos attached. Each of El34 power tube uses separate bias of -40v adjusted by 100k volume.AC 70V supply necessary -bias voltage to each power tube.Input DC voltage is 350v & after full bridge rectification by using 4xBY299 silicon diode to produce DC 441V to power tube plate. The original Dynamo ST-70 uses 7199 to be replaced by 6AN8 Pentode &Triode tube.Circuit wiring uses Star Grounding,I.e.one point connected to ground to minimize hum. 2 x MKP-10 0.12 Wima connected in parallel for a total of 0.24 400v as coupling condensers to each power tube. A standby switch is provided at back of amplifier for tubes fi laments on before DC votage applied to safeguard tube life. Aluminium chassis is used to make it less heavy of power amp.& nice look. Power output is 35 W per channel. Condition: Used. Sound is great & sweet and less Hum . AEG tube is expensive in the market nowaday. Sale price: $820 Price Reduced: $810 ;$800 ; $790; $780; $750; $730 ; $720 for quick disposal.