ST70 Power Amplifier

A good tube amplifier is simple in architecture and does not exaggerate. It works in harmony with the source material and the loudspeaker to produce a sonic landscape with deep natural bass and rich upper harmonics. The Dynaco ST-70 Series 3 follows David Hafler’s original concept while taking advantage of today’s higher resolution parts, 60 years of transformer-building experience, and an accumulation of in-depth circuit design knowledge to produce what may well be the most musically pleasing amplifier ever made.


  • Protective Grill Cover
  • High-Pass Filter
  • Trim Controls
  • Bias Adjustment