The Dynaco ST-70 Series 3 tube amplifier
Dynaco (a division of Radial Engineering Ltd.) is pleased to announce the ST-70 Series 3 tube amplifier is now shipping.
The ST-70 builds upon the proven design philosophies of the original David Hafler-designed Stereo 70, with contemporary design techniques resulting in exceptional performance improvements that meet the requirements of modern audiophiles. The ST-70 provides 35 watts per channel and is switchable between both 4 and 8 Ohm outputs, with Class-A push-pull stereo topography that has long been characterized as a reliable design with exceptional audio quality.
This latest rendition has seen a substantially overhauled power supply from the original version, employing a larger dual-primary power transformer with improved line regulation, increased filter capacitance, and a solid-state rectifier that results in a much more articulate response. The redesigned front end of the Series 3 amplifier replaces the obsolete 7199 pentode signal tubes from the original Stereo 70 with more commonly-used 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.
Building on the legacy of David Hafler's enormously successful Stereo 70, the new Dynaco ST-70 incorporates advancements in component quality, improvements to the electronic circuit performance, and an all new exterior design that is sure to please the most demanding audiophile.
For more on the ST-70
MSRP: $2,999.99 USD