Stavros Danos from the Aries Cerat seems to never rest... His R & D lab is again revealing something fresh and different, Triodefet! So what is Triodefet technology?
"Our Ianus monoblock amplifiers was a showcase of our unique Triodefet technology.We feel the time is right to introduce the Triodefet technology to more affordable audio gear, and expose this true innovation to larger audiophile crowd."
Fets, of Field Effect transistors, used in many audio amplifiers, present the following characteristic transfer curves.
As seen in this graph, the Fet is not the most linear of active elements.All modern and vintage production Fets present non-linearities,as shown on the above graph that make the use of simple feedback-less topologies and designs unpractical, and when they do, often mediocre sounding.
Tubes on the other hand, is another story all together. Triodes are the most linear active element engineers came up to.
It’s linearity is unmatched by any silicon based active element . However, the triode is a high output impedance, high voltage/low current device, making the use of impedance matching transformers mandatory, when driving low impedance loads, such as our loudspeakers.
So…What if we had a low voltage /high current active device , that had the linearity of a triode?..
Here comes the Triodefet.
The Triodefet is a three terminal device, like any Fet or triode, that presents the low voltage/high current operating mode of a high power Fet, at the same time, it’s characteristic transfer curves are exactly like a high quality triode.
Below are the characteristic transfer curves of the Triodefet device.Notice that the curves are exactly like a triode.Only difference is the scale.
The TriodeFet can be used to design incredibly good sounding circuits, that could not be possible be designed otherwise.
Using the Triodefet device,we come up with very simple and straight forward designs,that have very high linearity, sourcing from the inherit linearity of the Triodefet.The Triodefet can be used in very high bandwidth circuits,with linearity, without the use of global of local feedback,use of degeneration etc.
So what is the bottom line? Our brand new product, Is a two stage Single Ended stereo amplifier, with the Triodefet as the heart of the amplifier. Delivering 18W , it’s sound is as close it gets to a absolute top echelon SE triode amplifier, and unmatched by any SS amplifier today.
The amplifier will have additional headphone outputs, as well as be available in integrated form.