Thanks to the new JET3 Bias circuit, the new software algorithm now tracks and optimizes the output stage bias with more accuracy; resulting in improved performance and efficiency in any given condition. Furthermore, the increase in the output bias circuit’s stability translates directly to driving power, allowing the AMP-54R to drive a wider range of loudspeakers with ease.

The AMP-54R also incorporates a more advanced 32-bit CPU to run the latest, more sophisticated software architecture, enabling more accurate control of all circuits.

The JET3 bias algorithm makes the output transistors not turn off, in a similar way to what we in traditional terms call “Class A”, but in a much more efficient way. As the algorithm always tracks and adjusts the output bias in real time to turn on the transistors, it is the circuit isn’t continously run “on” – which is such an inefficient way, and therefore operates closer to conventional “Class AB”. In sum, the AMP-54R runs like Class A, but with efficiency like Class AB – and we call this innovative operation mode “Class SA” for “Smart A” or “Super A”.