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-44R to drive a wider range of loudspeakers with ease.

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-44R 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”.

First introduced with the AMP-54R, the innovative dual output mode allows users to tailor the amplifier’s performance to match the specific characteristics of their loudspeakers.

HV (High Voltage) Mode delivers the full output power of the amplifier, providing 70 watts at 8 ohms. HC (High Current) Mode reduces the output power to 35 watts, but in return, it increases the output bias current much higher than the HV mode.