top of page

The SM-103 is a no-compromise design that will take on the very best, regardless of cost.


There was only one way to improve on the incredible performance of the statement SS-103 - give each channel its own separate chassis and dedicated power supply and selected components. Which is exactly what we did and the SM-103 was born.


With a completely no-compromise design, this amplifier takes on the very finest products from around the world, regardless of their cost! Based on the SS-103, each SM-103 uses only the finest matched transistors and super precision resistors to ensure optimal working conditions for the different stages of each module.


This combined with a special coupling of each input stage, results in an ultra linear frequency response. The true balanced design, together with the local shunt regulated power supply, ensures excellent signal to noise ratio, making it possible to reveal every micro detail in the recordings. The result is a power amplifier, capable of exposing micro details/ dynamics never heard before without compromising the coherence of the recording. As the design is true balanced, all non-balanced signals are converted to true balanced straight at the first input stage.


It is part of the Signature Series. The performance of these products redefines how close to the live event you can get by listening to reproduced music.


Difference between SM-102 and the new SM-103 in short:


1. Improved regulators based on MP-M201 design on input, which improves resolution, soundstage and presentation


2. Updated output stage to accomadate sound modes.


3. Sound modes from MP-S201 implemented, giving the user the ability to select preferred presentation.


4. Updated top ventilation cover with VA logo


Upgrading from SS-102 to SS-103 is possible, but only at the Vitus Audio factory. Contact us for further information.

Vitus Signature SM-103 mk ii Monoaural Power Amplifier

  • Technical Specifications

    INPUT                         XLR analog                      RCA analog

    Available                      1                                     1

    Sensitivity                     0,7 VRMS                      1,4 VRMS

    Impedance                  10KΩ                              10KΩ

    Slew rate                     35V/ μs                           35V/ μs

    OUTPUT                      Speaker L                  Speaker R

    2x Balanced sets in paralle speaker output

    Impedance                    75 mΩ                       75 mΩ

    Power RMS (8Ω)   100W Class A / 150 W Class AB

    Frequency response     +800kHz                  +800kHz

    Signal to noise ratio      >110dB                    >110dB

    THD + noise                 < 0,01%                   < 0,01%



    Standby  <1W

    Full Power  Class AB  Classic 75W, Rock 100W 

                      Class A    Classic 295W, Rock 320W



    Height                         310 mm                        

    Width                          435 mm                       

    Depth                          610 mm                         

    Weight                         75 Kg                         


bottom of page