MSB Technology M205 Mono Amplifier
Following the resounding triumph of the S202 Stereo Amplifier, there was a significant demand for an enhanced mono amplifier housed in the same compact chassis.
The M205 takes the remarkable performance of the S202 to the next level by incorporating an improved input stage and doubling the power supply transformers and capacitors. This leads to a remarkable enhancement in sound quality, offering a greater sound-stage definition, vocal authenticity, and instrument solidity from the very first notes.
The M205 harmoniously complements MSB DACs with exceptional ultra high dynamic range through optimized architecture in crucial aspects of audio performance, power supplies, and ultra low-noise design.
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M205 MONO AMPLIFIER
Redefining High-Fidelity Audio in a Compact Chassis
Elevate Your Listening Experience with the M205 Mono Amplifier Following the acclaimed success of the S202 Stereo Amplifier, audiophiles demanded a mono amplifier that could match its performance in a similarly compact form. Enter the M205 Mono Amplifier—a powerhouse of precision engineering and sonic excellence.
Innovation, Amplified.
Building on the overwhelming success of the S202 Stereo Amplifier, the demand for a high-performance mono amplifier in the same compact form factor was undeniable. Enter the M205 Mono Amplifier—a bold evolution that enhances the S202’s acclaimed performance with a redesigned input stage and twice the power supply transformers and capacitors. The result? A dramatic leap in sonic precision, with deeper soundstage imaging, lifelike vocal presence, and rock-solid instrument placement from the very first note.
Engineered to seamlessly complement ultra-high dynamic range DACs, the M205 features optimized architecture across critical performance zones: ultra-low-noise circuitry, robust power delivery, and precision audio pathways. With modular amplifier cores, matched impedance input stages, and a CNC-machined billet aluminum chassis, the M205 sets a new benchmark for value and performance in mono amplification.
Unmatched Audio Performance
The M205 takes the legendary S202 platform to new heights with a redesigned input stage and double the power supply transformers and capacitors. This upgrade delivers a dramatic leap in audio fidelity, offering:
Enhanced soundstage depth and width
Exceptional vocal clarity and realism
Rock-solid instrument imaging from the very first note
Engineered for Synergy with High-End DACs
Designed to complement ultra-high dynamic range DACs, the M205 features:
Optimized power supply architecture
Ultra-low-noise circuitry
Fully modular cores and matched impedance input stages
Precision-machined billet aluminum chassis for superior resonance control
Power Meets Purity
At the heart of the M205 are two custom low-noise, high-current toroidal transformers and robust output buffers, ensuring:
Transparent, fatigue-free listening
Consistent performance with even the most demanding loudspeakers
A holographic soundstage that immerses you in every detail
Class-A Discrete Design with Zero Negative Feedback
The M205’s Class-A matched impedance input stage minimizes signal reflections, input noise, and distortion. With a zero negative feedback topology, it maximizes:
Power transfer
Dynamic range
Sonic purity and musicality
Every component is hand-selected for audiophile-grade performance and long-term reliability, and each unit is proudly crafted in our California facility.
Precision Cooling & Striking Aesthetics
After 28 hours of CNC machining, each amplifier features:
Over 3,000 in² of heatsink surface area
High-efficiency heat pipes for even thermal distribution
A sleek, modern profile that looks as good as it sounds
Intelligent Control & Seamless Integration
The M205 offers intuitive operation with:
Push-button controls and remote compatibility
12V trigger inputs for synchronized power management
Programmable soft-start circuits to protect your home audio system
Designed for Flexibility & System Optimization
Dual speaker outputs for bi-amping configurations
Angled speaker lugs for stress-free cable routing
Multiple ground posts to support advanced EMI reduction techniques like star grounding and shielded cabling
TECHNICAL SPECIFICATIONS
| Static Power Consumption | 90 Watts |
| Operating Voltage Range | 120/240V (Auto switching), 100V (Fixed) |
| Fuse | 1/4"x1-1/4" 10A 250V Slow Blow |
| Input | 1x XLR Input |
| Output | 2x Binding post set per channel |
| Controls |
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| Continuous Power Output (8Ω) < 1% distortion | 220 W |
| Continuous Power Output (4Ω) < 1% distortion | 400 W |
| Dual Bi-Amp Continuous Power Output (8Ω) < 1% distortion | 200 W |
| Dual Bi-Amp 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 |
| Gain (150Ω source impedance) | 23.8dB |
| Input Impedance (User Selectable) | 75Ω / 300Ω / 1.2kΩ |
| Output Impedance (20 to 20kHz) | 0.01Ω |
| Topology - Input/Gain Stage |
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| Topology - Output Stage |
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| Chassis Dimensions (Per Mono Block) |
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| Shipping Dimensions (Per Mono Block) |
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| Included Accessories |
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