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The S202 Stereo Amplifier

Impressive performance.  Compact stereo design. 

Innovation. Redefined.

After the astounding success and performance of the S500 Stereo Amplifier, we set our sights on expanding that sound to more systems. Trickle-down technologies incorporated into a more compact, lower-power framework resulted in the S202 Stereo Amplifier. It’s capable of meeting our DAC’s ultra high dynamic range head-on with optimized architecture in the critical areas of audio performance, power supplies, and ultra low-noise design. The S202 includes a fully modular design, matched impedance input stage and an all billet CNC case. The highest value amplifier we’ve ever created, the S202 redefines excellence and sets a new bar in the industry.

Power without limits.

Thanks to a massive custom low-noise high-current toroidal transformer and rugged high-current output buffers, the S202 provides a transparent, holographic listening experience that’s completely fatigue free. This ensures that the amplifier presents consistent performance even with difficult speakers.

Input architecture.

The S202 features a discrete design with a Class-A matched impedance input stage. The result is a product with minimized signal reflections, input noise, and distortion, while also maximizing power transfer and dynamic range in a zero negative feedback design. All components were meticulously chosen for their sonic performance and longevity, ensuring your amplifier is built to last.


Billet CNC chassis.

The S202 amplifier is designed and lovingly crafted in our factory based in California. After 14 hours of CNC machining, a complete chassis of billet aluminium components are ready, maximizing heatsink area with a stunning visual profile. This high-efficiency design provides a surface area of over 3,000 in² per amplifier. High-power heat pipes distribute heat evenly for optimal thermal and electrical performance.


Core values.

Building the S202 amplifier with a core enclosure greatly improves its reliability and performance. Upon completion, the cores are rigorously tested and stocked for orders, ensuring the highest quality product is ready at a moment’s notice. With this segmentation, your system is optimized for performance and resilience.


Smart control features.

The S202 is equipped with a simple, user-friendly control interface. Intuitive push buttons, remote commands, and the 12V triggers guarantee control over power and standby modes. Further control of amplifier “power on” timers and soft-start circuits allow a multi-amplifier system to power up without putting strain on your listening room’s electrical system.


Powerful configurations.

Intuitively oriented speaker lugs direct your speaker cables in the right direction without strain. Multiple ground posts enable EMI reduction strategies, including shielded cables and system star grounds.

MSB S202 Stereo Power Amplifier

  • The S202 Stereo Amplifier

    Static Power Consumption 90 Watts On
    Standby power less than 2 watts
    Operating Voltage Range 120/240V (Auto switching)
    100V (Fixed)
    Fuse 1/4"x1-1/4" 10A 250V Slow Blow
    Input 2x XLR Input
    Output 1x Binding post set per channel
    Controls Input Impedance Switch
    On/Off Button
    Standby Button
    Display Dimmer
    12V Mode Switch
    2x MSB 12V trigger port
    Continuous Power Output (8Ω) < 1% distortion 200 W
    Continuous Power Output (4Ω) < 1% distortion 380 W
    Frequency Response (20 to 20kHz) ±0.03dB
    Signal to Noise (20 to 22kHz) >130dB (>133dBA)
    Equivalent Input Noise (22kHz BW) 0.65μV
    Crosstalk @ 2kHz <-110dB
    Gain (150Ω source impedance) 23.8dB
    Input Impedance (User Selectable) 75Ω / 300Ω / 1.2kΩ
    Output Impedance (20 to 20kHz) 0.01Ω 


    Input/Gain Stage - Class-A
    - Double balanced
    - Impedance matched
    - Fully discrete
    - Independent power
    Output Stage - Class-AB
    - Balanced
    - Medium bias
    - Current gain only

    Chassis Dimensions

    Width: 16 in (404 mm)
    Depth: 19 in (483 mm)
    Height: 6.5 in (165 mm) Without Feet
    7 in (178 mm) With Feet
    Weight: 90 lbs (41 kg)
    Product Feet: M6X1 Thread
    3 or 4 Foot Configuration

    Shipping Dimensions

    Width: 24 in (610 mm)
    Depth: 28.25 in (718 mm)
    Height: 16.5 in (419 mm)
    Weight: 137 lbs (62 kg)

    Included Accessories

    User Manual
    IEC Power Cord

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