Poster: Dynaco ST-70 Stereo Tube Amplifier Professionally Rebuilt by Joe Curcio

Dynaco ST-70 Stereo Tube Amplifier Professionally Rebuilt by Joe Curcio .... It only has about 10-15 hours of use since the rebuild. It still has the old stock tubes it had when I bought it from the original owner. The sound is incredible. The cosmetic condition is very good... see pics for condition. I had 5 way binding posts installed for both 8 and 4 ohm outputs and also new gold RCA input connectors. This amp is ready for many years of enjoyment. I do not have the wire cage.

This amp has a new solid state power supply board and stereo driver board. It has also been completely rewired (see pics). I sent it to Joe in 2023 and had him completely rebuild it.... from Joe... "I have completed the rewiring and installation of our replacement power supply module. Currently the amplifier has been subject to and passed our 72 hour burn in testing and following the burn has passed our outgoing performance certification test. ... I have also included a series of photos showing the some of the phases including teardown, completed new wiring and top view of the finished amp. I also wanted to let you know that I have included the optional solid state rectification that is included in our power supply module and in this case, the 5AR4 tube rectifier is no longer needed." I have a 10 page PDF of the test results if your interested email me.