Dynaco ST-70 Series 3 Tube Power Amplifier $3000 Review

February 25, 2019 § Leave a comment

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” Its ability to resolve individual threads within a complex musical passage was highly evolved over that of most vintage tube designs. And it was able to latch onto transient decay down to what is an impressively low noise floor for a tube amplifier. Its spatial presentation and microdynamic conviction equaled or exceeded that of any comparably powered push-pull tube amp I’ve auditioned over the years, even when driving a 96dB-sensitive loudspeaker. That’s quite a testimonial for the purity of its first watt. In fact, I had just spent some quality time with a new 300B amp acquisition, and it hit me that the Dynaco approached the sound of a fine single-ended triode amp, actually sounding better at the frequency extremes, and nearly as refined in the midrange. I can say with confidence that the bass demons that afflicted the original ST-70 have been exorcised. Upright jazz bass was nicely defined with good pitch definition. However, deep bass performance was typical for a low-power tube amp, lacking current delivery into low-impedance loads.”



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