Lysios – Si-C Mosfets Stereo Amp

Lysios is an epithet of the greek god Dionysus and it means “liberator”.

Audiozen Lysios is a power amplifier conceived and projected just to let free the musical event, to allow you to enjoy it in every possible moment.

The power amplifier is the “connecting link” between the preamplifier and the loudspeakers and it mistakenly seems to be the least important part of an Hi-Fi system, just because it simply has to apply power to the terminals of the transducers.

For Audiozen it is not so.
The approach to Lysios project was to design a different power amplifier, with great current capability but with the peculiarity of giving the perception of true realism, emphasizing the character of the upstream components. Audiozen developed the Lysios’ project in thier laboratories and the result is a power amplifier with great dynamicness and transparency.

The first version of Lysios (2016-2018) had the power stage equipped with IGBT (Insulated Gate Bipolar Transistor), a semiconductor that combines both the high input impedance of the mosfet – making easier its driving – and the better current capability of the transistor.

But the continuous effort to bring innovation in Hi-Fi world made Audiozen the first to design a power stage using the new silicon carbide (Si-C) mosfets.

LYSIOS SPECIFICATIONS
Type
Dual Mono power amplifer
output power @ 8 Ω - 4 Ω
150 - 300 watts per channel
Class
AB
frequency response
5 - 150.000 Hz +/- 3dB
sensitivity/input impedance
1,1 volt/12 KΩ
signal-to-noise ratio
125dB
available finishes
silver & black
Main Unit dimensions
340 x 135 x 315mm (WxHxD)
Main Unit weight
6 Kg
PSU dimensions
340 x 95 x 295mm (WxHxD)
PSU weight
13 Kg

Silicon carbide is a material composed of carbon and silicon and the devices designed with this semiconductor stand out for:
– remarkable speed qualities (a Si-C mosfet is about 3 times faster than a silicon mosfet);
– minimal input and output capacities (even 10 times lower than a conventional mosfet), an excellent feature that allows the audio signal not to be “colored”, restoring realism to the event;
– high thermal conductivity, 3 times greater than silicon, synonymous with reliability for the lower cooling requirements.
These excellent peculiarities are combined with the classic “warmth” of the mosfet, here even more for intrinsic constructive properties, realizing what can therefore be considered the ideal component for music reproduction.

At first Audiozen developed the Si-C mosfets power stage for the new Mono monophonic power amplifier, but the sonic result was so impressive that has been decided to use Si-C Mosfets also on Lysios, replacing IGBTs.
Audiozen redesigned a quasi-complementary symmetry Si-C mosfets (4 x channel) power stage, polarized in class AB; this masterly project is enriched with a Baxandall diode, which eliminates the local Miller effect, obtaining an excellent linearity at high frequencies.

For the best listening experience the separate power supply unit is equipped with a toroidal transformer for each channel with an energy reserve provided by low ESR filter capacitors.
Lysios is a dual mono power amplifier.

All transistors are made by ON Semiconductor, one of the best world company in audio semiconductors.
Audiozen is among the very few manufacturers in the world to use metal film power resistors, not the cheaper ceramic.

Lysios is equipped with binding posts that accept banana plugs, spades lugs or stripped cable.
RCA connectors are made by one of the finest connectors manufacturer worldwide.
The cabinet is entirely made in aluminum.

By turning to “on” the aluminum knob located in the front panel, the professional relay, located in the separate PSU, will switch on the power amplifier.

Lysios is handcrafted in Italy choosing the best available components.
Lysios and Insight preamplifier form a pair that combines the peculiarities of tube preamp and the new frontiers of solid state output stage.