The Dyna-70 Ultimate Upgrade Kit comes with all parts required to assemble and install your Dyna-70 Ultimate Upgrade into your ST-70. The Dyna-70 Ultimate Upgrade audio kit is designed specifically to integrate with the supplied Automatic Bias Module, bringing your ST-70 into the 21st century in both sound and electronics technology & convenience!
The Dyna-70 Ultimate Upgrade is based on the 6CA7/EL34 family of power tubes, just like the original ST-70. If you have a good set of 6CA7/EL34 tubes in your ST-70 they will work just fine with the Dyna-70 Ultimate Upgrade.
Kit Assembly
Kit construction has four steps:
The Dyna-70 kit features all through-hole components. The electronic circuits are built on high-quality, etched 2-layer FR-4 Copper faced Printed Circuit Board with plated through holes for generous solder contact and easy soldering. The circuit boards have been designed with generous spacing between all the soldered points, making assembly easier and reducing odds of a solder bridge.
We use quality, name brand components from manufacturers such as Nichicon, United Chem Con, Panasonic, Wima, Solen, Audyn as well as other name brand components. We source our components from Mouser, Digi-Key, Newark, and other reputable U.S. suppliers; you can trust all components are genuine and not counterfeit parts.