The Dynaco ST-70 Series II is like a legendary rock band going on a reunion tour — it's a fresh take on a beloved classic that helped define what high-fidelity tube sound was all about. The original ST-70 is considered one of the most famous and successful tube amplifiers of all time, and Dynaco, knowing this, decided to give it an encore performance with the Series II, updated for a new generation of audiophiles. Spoiler alert: it still rocks, and it still brings that tube magic that made its predecessor a cult favorite.
- Production
- 1992-1998
- Condition
- 9/10
- Serial No.
- 6146461
- Restoration
- Replaced all electrolytic capacitors
- Installed new driver tubes
- Adjusted bias
- Factory Specs
Rated power: 35Wpc (15.44dBW/8 ohms),
20-20kHz, at less than 0.25% THD.
IM distortion: less than 1% up to 30W.
Frequency response: 20-20kHz ±0.5dB at rated power.
Input sensitivity: 1.3V.
Dimensions: 13" W by 9.5" D by 7" H.
Weight: 35 lbs.
- The History of Dynaco
- Founded by hi-fi pioneer David Hafler and Ed Laurent in 1955, a small company by the name of Dynaco unknowingly would become the most popular tube amplifier company of all time. Five years prior in 1950, David Hafler and his friend Herb Keroes started up the company Acrosound, dedicated to building audio quality...
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- Liner Notes
The Dynaco ST-70 Series II is like a legendary rock band going on a reunion tour — it's a fresh take on a beloved classic that helped define what high-fidelity tube sound was all about. The original ST-70 is considered one of the most famous and successful tube amplifiers of all time, and Dynaco, knowing this, decided to give it an encore performance with the Series II, updated for a new generation of audiophiles. Spoiler alert: it still rocks, and it still brings that tube magic that made its predecessor a cult favorite.
The Dynaco ST-70 Series II stays true to the original's aesthetic roots, which is part of the charm. It’s got that old-school, industrial look with exposed tubes glowing like a warm campfire, wrapped in a sturdy chassis that feels like it’s built to survive an apocalypse. If you’re into that retro Hi-Fi vibe, this amp delivers it in spades — all you need is a vinyl record spinning and a drink in hand, and you’ve got a serious mood going.
The Series II doesn’t stray too far from the iconic design of the original ST-70, with its four EL34 output tubes and two 7199 driver tubes doing the heavy lifting. The minimalist, no-frills exterior hides the real magic: the amp’s ability to bring your music to life with that lush, smooth tube sound. It’s a two-channel, 35-watt per channel amplifier, meaning it’s got plenty of power to drive most speakers with ease, especially if you're using something relatively efficient like Klipsch or other high-sensitivity models.
- Stock No.
- 8820923302109
The Dynaco ST-70 Series II is like a legendary rock band going on a reunion tour — it's a fresh take on a beloved classic that helped define what high-fidelity tube sound was all about. The original ST-70 is considered one of the most famous and successful tube amplifiers of all time, and Dynaco, knowing this, decided to give it an encore performance with the Series II, updated for a new generation of audiophiles. Spoiler alert: it still rocks, and it still brings that tube magic that made its predecessor a cult favorite.
Production
1992-1998
Condition
9/10
Serial No.
6146461
Restoration
- Replaced all electrolytic capacitors
- Installed new driver tubes
- Adjusted bias
Factory Specs
Rated power: 35Wpc (15.44dBW/8 ohms),
20-20kHz, at less than 0.25% THD.
IM distortion: less than 1% up to 30W.
Frequency response: 20-20kHz ±0.5dB at rated power.
Input sensitivity: 1.3V.
Dimensions: 13" W by 9.5" D by 7" H.
Weight: 35 lbs.
The History of Dynaco
Founded by hi-fi pioneer David Hafler and Ed Laurent in 1955, a small company by the name of Dynaco unknowingly would become the most popular tube amplifier company of all time. Five years prior in 1950, David Hafler and his friend Herb Keroes started up the company Acrosound, dedicated to building audio quality...
[ Read More ]
Liner Notes
The Dynaco ST-70 Series II is like a legendary rock band going on a reunion tour — it's a fresh take on a beloved classic that helped define what high-fidelity tube sound was all about. The original ST-70 is considered one of the most famous and successful tube amplifiers of all time, and Dynaco, knowing this, decided to give it an encore performance with the Series II, updated for a new generation of audiophiles. Spoiler alert: it still rocks, and it still brings that tube magic that made its predecessor a cult favorite.
The Dynaco ST-70 Series II stays true to the original's aesthetic roots, which is part of the charm. It’s got that old-school, industrial look with exposed tubes glowing like a warm campfire, wrapped in a sturdy chassis that feels like it’s built to survive an apocalypse. If you’re into that retro Hi-Fi vibe, this amp delivers it in spades — all you need is a vinyl record spinning and a drink in hand, and you’ve got a serious mood going.
The Series II doesn’t stray too far from the iconic design of the original ST-70, with its four EL34 output tubes and two 7199 driver tubes doing the heavy lifting. The minimalist, no-frills exterior hides the real magic: the amp’s ability to bring your music to life with that lush, smooth tube sound. It’s a two-channel, 35-watt per channel amplifier, meaning it’s got plenty of power to drive most speakers with ease, especially if you're using something relatively efficient like Klipsch or other high-sensitivity models.
Stock No.
8820923302109
