TRIODEFET | CLASS A | 20W STEREO INTEGRATED AMPLIFIER
We proudly present Ianus Protos - the XXX in the new Ianus Series
“Debuting at Munich High End May 2023, the new Ianus Protos Stereo power amplifier uses TriodeFet technology and has features that make it unique in the already innovative Ianus range.“
DESIGNER
Single Ended Single Stage?
The Ianus Protos integrated amplifier and its amplifier siblings in the Ianus range, uses TriodeFet technology, however it has features that make it unique in the already innovative series. In contrary to the bigger Geminae model, the Aperio is using the TriodeFet active element in a very different topology, as this is a Single Ended design It goes a step beyond to be the only integrated amplifier which is Single Stage as well. One stage from input to output posts.
The Design Concept
The Ianus Protos amplifier is not only Single Ended, it is also a Single Stage! Like the bigger Essentia model, incredibly, there is no driver stage and no input stage! However this is not just an amplifier but a complete integrated amplifier.That means that from the input to the speaker outputs, there is only one stage of amplification.
This extremely simple topology we feel is a breakthrough in amplifier design, and is an elusive design goal for many, including our lab. This feat was only possible to execute after the breakthrough of our TriodeFet technology, and now we are finally able to use an active element that has the needed specifications for the purpose: Extremely high linearity, high voltage gain, high current gain and very high input impedance. All in a single stage.
The Protos means, the XXX, who makes things clear. We strongly believe the Protos brings unprecedented clarity in reproduction of music.
The volume control is implemented by a multitap input transformer.
Inputs include our proprietary AC link input.
Practically maintenance free
The TriodeFet technology, in contrast to a SET amplifier design that is using big output tubes, is essentially maintenance free as the internal tubes used for curve creation are rated at more than 10,000 hours lifespan. Its unique single stage nature means that it is as sonically transparent as it can get. The amplifier power delivery is 20W (8ohm) full class A.
Triode or solid state?
Neither. TriodeFet technology does not sound like hybrid, tube or solid state amplifier. It sounds how an ideal tube amplifier should sound..
The triode-like transfer curves of the TriodeFet means the Ianus Aperio ,like the bigger brother Essentia, sounds very much like the very best Single Ended tube amplifier. A superb midrange and treble, accurate timbre and the huge soundstage we expect from big bottle tube amplification.
Technical Specifications
SPECIFICATIONS | |
Technology: | Single stage, Single Ended, TriodeFet technology |
Gain stages: | Single stage amplifier, from input to output posts |
Power output: | 35W @8ohms |
Tube compliment: | 2 x E280F / E282F / E810F / E180F |
Volume control: | 26 step TVC volume control technology |
Inputs: | 4 X RCA , 1 X XLR (pin 2 used), 1 x Direct (Ac link) |
Power bandwidth: | full power at 5Hz -3db |
Maximum gain: | 21db (tube dependent) |
Noise floor: | -90db ref 1V RMS |
Dimensions: | Main unit: 420mm W x 310mm D X 420mm H 80kg PSU unit: 420mm W x 310mm D x 140mm H 35kg |
