The “perfect” amplifier is basically impossible to design, but with the required engineering skills gained from a strong background in vintage amplifier design AND a deep knowledge of recently developed components as well as modern circuits, it is possible to get very close to an amplifier which works almost perfectly.
CanEVER Audio®, with its smart engineering approach, has already proven that introducing highly competitive products in the overcrowded market of High End Audio is possible. The ZeroUno DAC, introduced in 2016 and the ZeroUno PLUS, shown for the first time at the High End Show in Munich 2017, are perfect examples of this. Both products are a combination of a high quality DAC including full MQA decoding and a preamp, with an intricately designed tube output stage working as a current source! While the ZeroUno DAC is a preamp accepting input from digital sources only, the ZeroUno PLUS comes with a top class analog preamp built in, in addition to the ZeroUno DAC circuit.
The CanEVER Audio® LaScala PowerAmp is one of the few audio amplifier designs, which consequently follows the most important results in research about audio amplifiers in engineering history. It is the result of over 30 years of research and experience gathered in the design and building of amplifiers based on single ended, push-pull and hybrid circuits, using tubes and/or transistors.
The CanEVER Audio® LaScala PowerAmp is a TRIODE VOLTAGE AMPLIFIER followed by a CURRENT MOSFET BUFFER!
Why is this important?
The triode voltage amplifier is responsible for the voltage swing and the damping of the signal at the output.
The MOSFET current buffer is responsible for the interaction with the loudspeaker impedance, avoiding irregularities at the load of the triode stage, with the impedance itself. So, the voltage amplifier is loaded with a very high impedance to preserve the sound quality.
To design the “correct” amplifier, it is important to understand how the load connected to the amp is working. The load of an audio amplifier is a loudspeaker. Each driver inside a loudspeaker follows the laws of physics – not the “ideas” of more or less talented people designing amplifiers. These laws of physics “command” any kind of speaker driver to move as a function based on the CURRENT of the input signal. This means, that the movement of the cone is directly proportional to the applied CURRENT.