This vintage Dynaco ST-70A tube amplifier was factory-built in 1973 and is a highly sought-after piece of audio equipment. With its iconic Dynaco brand and model number, this amplifier is sure to impress any audiophile. Designed for use with vintage audio and video equipment, this amplifier delivers exceptional sound quality and clarity. Whether you're a collector or simply looking for a high-quality vintage amplifier, the Dynaco ST-70A is an excellent choice. Please review pictures as they are part of the description that will attest to the condition of the item listed. Please ask questions before bidding.

Dynaco Dynakit Stereo 70 ST70 Vintage Tube Amplifier - untested. Pulled from storage unit auction I know nothing about vintage expensive stereo equipment so ask me questions I’m not plugging it in I don’t wanna cause no issues if there isn’t any thanks again

Rare Jim Fosgate custom built ST70 tube amplifier Dynaco. So Jim was a friend of mine. He put me in charge of selling his audio collection. Proceeds go to the Fosgate foundation. Jim built these for friends or were merely innovations. This one was in his museum. It doesn’t have a bottom however a st70 will fit. Nice quiet tested amp. Tubes included are as found. All good. See my other listings! I will be selling more in the coming weeks. Tested and sounds great!

Dynakit Stereo 70 Dynaco ST70 Vintage Tube Amplifier (untested). From the estate of an audiophile. Purchased in 1974. Original assembly instructions as well as additional schematics and notes including letter with modification instructions which may or may not have been done - this is beyond my area of expertise. This is untested and is being sold in “as is” condition. I removed cage for photos. Has been stored on a closet top shelf for years - dusty - see photos. It will be carefully packed and shipped with USPS ground.

Two 7199 tubes taken from Dynaco ST70Tested by TV-7D/U at low values

Rare Jim Fosgate custom built ST70 tube amplifier Dynaco. So Jim was a friend of mine. He put me in charge of selling his audio collection. Proceeds go to the Fosgate foundation. Jim built these for friends or were merely innovations. This one was in his museum. It doesn’t have a bottom however a st70 will fit. Nice quiet tested amp. Tubes included are as found. All good. See my other listings! I will be selling more in the coming weeks. Tested and sounds great!

Matched Pair EL34 6CA7 Dynaco Great Brittan Mullard Tested ST70 Amp B34. Tests Good on my serviced Hickok 6000A tube tester. From a collection of tubes collected in the early 1990’s with HIFI uses in mind.. Sourced through old Radio and TV repair shops throughout the midwest USA, Audiomart Magazine and Hamfests (pretty much pre-internet). Tested and boxed up in the day, unpacked present day. Tested again and available now as I thin the herd. Will Combine shipping. Let me Know if you are bidding on other lots. More coming!

Matched Pair EL34 6CA7 Dynaco labeled Great Brittan ST70 B33. Tests Good on my serviced Hickok 6000A tube tester. From a collection of tubes collected in the early 1990’s with HIFI uses in mind.. Sourced through old Radio and TV repair shops throughout the midwest USA, Audiomart Magazine and Hamfests (pretty much pre-internet). Tested and boxed up in the day, unpacked present day. Tested again and available now as I thin the herd. Will Combine shipping. Let me Know if you are bidding on other lots. More coming!

Only one stereo board left:Stereo Dyna YOD board with 2 sockets for 6GH8s, and you get 2 NOS 6GH8s made by Ei in Yugoslavia with Telefunken tooling. I think these drove EL34 / 6CA7 / 6550 / KT88 which have similar bias voltages. Someone in NY has sold 14 pairs of these same 6GH8s for more than we are charging with the board

For sale are these new tube amp PCB printed circuit boards, $9.99 each, take a plug in socket for two 6GH8s.so im guessing they are stereo and drive a quad of EL34 / 6CA7 / 6550 / KT88s. (these all have similar bias voltages and pinouts). Price is $9.99 per boardthey are marked Stereo Dyna YOD