Tube Amplifier Schematic from the instructions push pull amplifier pdf. The dynakit ST70 input stage uses a 7199 tube.
The EL34 output stage is push-pull and the dynakit ST70 amplifier is rated at 35 Watts per channel. 5AR4 rectifier tube is used in the power supply. Please forward this error screen to 74. S-5 Electronics are an ideal way to get introduced to vacuum tube audio. However, don’t be fooled by their low cost.
The prices for the tube amp kits noted below are from September 2014. 00 – Please see review below. The build logs provide construction tips, a review and some contain modifications and measurements. Also, take a look through the S-5 Electronics Tube Amp Kit Photo Gallery for more finished kits. Bruce Heran has completed one of the new S-5 Electronics K-8LS Tube Amplifier Kits. Another reader has also confirmed the poor low frequency response measured by Bruce.
If you have any experience with the new S-5 electronics tube amp kits, please contact us. Given the low cost and great sound of these tube amp kits, it is no surprise they are popping up everywhere. This is Scott’s build of the inexpensive K-502 tube amp kit. It features a fantastic looking enclosure and uses a stepped attenuator for volume control. The enclosure for the K-502 Tube Amp Kit is wood and Plexiglas.
Together these two projects make a great looking Hi-Fi unit. Another S-5 Electronics K-12M Tube Amplifier Kit! This is Bruce’s build of the popular and inexpensive Tube Amplifier Kit. This is Mark’s build of the S-5 Electronics K-12M Tube Amplifier Kit.