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MSB M500 Mono Amplifier
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MSB M500 Mono Amplifier
The world’s leading DACs needed an amplifier to match so we engineered a clean slate design that could meet our DAC’s ultra high dynamic range head on. With the amplifier’s architecture optimized in critical areas, audio performance, longevity, and an ability to drive any speaker became our principal design parameters. We redefined the idea of what an amplifier can be, embedding the M500 with a fully modular design alongside a 1.0 Farad Power Core, a matched impedance input stage and an all billet CNC case. The finest amplifier we’ve ever created, the 500 series redefines excellence and sets a new bar in the industry.
The M500 features a discrete design featuring a class A matched impedance input stage. This 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. With custom low-noise high-current toroidal transformers and rugged high-current output buffers, the M500 provides a transparent, holographic listening experience that’s completely fatigue free.
All components were meticulously chosen for their sonic performance and longevity, ensuring your amplifier is built to last.
The 500 series amplifier is designed and lovingly crafted in our factory based in California. Each of the heatsinks start out as a 51lb aluminum block before sixty percent is removed over eight hours of machining, resulting in 17.5 lbs of refined aluminum. This high efficiency design provides a surface area of over 10,000 in² per amplifier. What’s more–the fin thickness is slightly varied to help reduce resonances and ringing in the heatsinks, while multiple high power heat pipes distribute heat evenly for optimal thermal and electrical performance.
The M500 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. 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. A 20 amp IEC connection is provided for high current delivery, while three gain settings optimize dynamic range for any speaker. Elegant yet commanding, our finishes are available in a matte silver or matte black anodize. Our products include our in-house designed viton feet, but any audiophile M6X1 foot can be installed to personalize your system.
MSRP: $118,500 (PR) Available in matte silver or matte black anodize
| Static Power Consumption | 150 Watts On Standby power less than 2 watts |
| Operating Voltage Range | 120/240V (Auto switching) 100V (Fixed) |
| Fuse | 1/4"x1-1/4" 15A 250V Slow Blow |
| Input | 1x XLR Input |
| Output | 2x Binding post set per channel |
| Controls | Gain switch Input Impedance Switch On/Off Button Standby button Display Dimmer 12V Mode Switch 2x MSB 12V trigger port |
| Continuous Power Output (8Ω) < 1% distortion | 500 W |
| Continuous Power Output (4Ω) < 1% distortion | 1000 W |
| Frequency Response (20 to 20kHz) | ±0.025dB |
| Signal to Noise (20 to 22kHz) | >136dB (>140dBA) |
| Equivalent Input Noise (22kHz BW) | 0.5μV |
| Low Gain (75Ω source impedance) | 16.4dB |
| Medium Gain (75Ω source impedance) | 22.4dB |
| High Gain (75Ω source impedance) | 28.4dB |
| Input Impedance (User Selectable) | 75Ω / 300Ω / 1.2kΩ |
| Output Impedance (20 to 20kHz) | 0.07Ω |
| Topology | |
| Input/Gain Stage | - Class-A - Quad balanced - Impedance matched - Fully discrete - Independent power and transformer |
| Output Stage | - Class-AB - Balanced - High bias - Current gain only |
| Chassis Dimensions (Per Mono Block) | |
| Width: | 15 in (381 mm) |
| Depth: | 23.25 in (590 mm) |
| Height: | 10.5 in (267 mm) Without Feet 11 in (279 mm) With Feet |
| Weight: | 135 lbs (61.25 kg) |
| Product Feet: | M6X1 Thread 3 or 4 Foot Configuration |
| Shipping Dimensions (Per Mono Block) | |
| Width: | 23 in (585 mm) |
| Depth: | 35 in (889 mm) |
| Height: | 21 in (534 mm) |
| Weight: | 194 lbs (88 kg) |
| Included Accessories | |
| User Manual IEC C19 Power Cord |