Vancouver, Canada (May 1, 2018)—The ST-70 Series 3 tube amplifier from Dynaco is now shipping.
Taking inspiration and some design aspects from the original David Hafler-designed Stereo 70, the ST-70 adds contemporary design techniques as provides 35 watts per channel. The unit is switchable between both 4 and 8 Ohm outputs, with Class-A push-pull stereo topography.
The tube amplifiers sports an updated power supply as compared to the original version, employing a larger dual-primary power transformer with reportedly improved line regulation, increased filter capacitance and a solid-state rectifier.
Taking a cue from the original Stereo 70, the ST-70’s front end replaces the obsolete 7199 pentode signal tubes with 12AU7 dual-triode tubes, while the output stage and EL34/6CA7 output tubes retain the same elements as the original Stereo 70.
A set of front-panel recessed trimmers has been provided, allowing the bias adjustment to be fine-tuned for each output tube.
The ST-70 has a MSRP of $2,999.99 USD.
Radial Engineering Ltd. • www.radialeng.com
Hafler-Dynaco • www.dynaco.com