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The Musical Fidelity M6si Dual-Mono is a high-performance integrated amplifier configured internally as a preamplifier plus two fully independent monobloc power amplifiers. This pre-owned example is in great condition in black finish. No remote control, original packaging or additional accessories are included.
Delivering a robust 220 watts per channel into 8 ohms with exceptional current capability, the M6si effortlessly controls demanding loudspeakers while maintaining vanishingly low distortion and an extremely quiet noise floor—making it an ideal centrepiece for serious stereo systems.
Visit our Lane Cove showroom to hear the authority, transparency and musical engagement of the M6si Dual-Mono Amplifier.
Why Choose the Musical Fidelity M6si Dual-Mono Integrated Amplifier?
The M6si Dual-Mono combines the convenience of a single chassis with the performance advantages of a dual-mono design, offering serious power, refined circuitry and comprehensive connectivity.
• Dual-Mono Power Delivery: Separate monobloc stages ensure excellent channel separation and consistent performance under load.
• Authoritative Speaker Control: 220 W into 8 Ω with high current capability drives difficult loads without strain.
• Exceptional Technical Performance: Extremely low distortion, wide bandwidth and high signal-to-noise ratio reveal fine musical detail.
• Versatile Connectivity: Balanced XLR, multiple RCA line inputs, asynchronous USB and switchable MM/MC phono cover modern and classic sources.
• Flexible System Integration: Fixed and variable pre-outs plus trigger connections allow easy expansion or bi-amping.
Audition the Musical Fidelity M6si at our Lane Cove showroom to experience its combination of power, refinement and system versatility.
With a frequency response held to +0 / –0.1 dB from 10 Hz to 20 kHz and a signal-to-noise ratio exceeding 107 dB, the M6si Dual-Mono presents music with remarkable clarity and dynamic range. The dual-mono topology keeps left and right channels electrically independent, resulting in a wide, stable soundstage and precise imaging.
The built-in phono stage offers accurate RIAA/IEC equalisation (±0.5 dB) for both moving-magnet and moving-coil cartridges, while the asynchronous USB input delivers clean 24-bit/96 kHz performance with virtually eliminated jitter. High current delivery ensures the amplifier remains composed even with complex, low-impedance loudspeakers.
Technical Specifications
• Product Type: Pre-owned
• Type: Dual-mono integrated amplifier
• Power Output: 220 W per channel into 8 Ω
• THD + Noise: 107 dB A-weighted
• Frequency Response: +0, –0.1 dB, 10 Hz – 20 kHz
• Line Inputs: 4 × RCA, 1 × balanced XLR
• Digital Input: 1 × USB Type-B asynchronous (up to 24-bit/96 kHz)
• Phono Input: Switchable MM/MC
• Phono Sensitivity: 3 mV (MM), 0.4 mV (MC)
• Phono Signal-to-Noise: >84 dB A-weighted
• Phono Impedance: 47 kΩ (MM and MC)
• Phono Frequency Response: RIAA/IEC ±0.5 dB, 20 Hz – 20 kHz
• Outputs: Fixed line-level, variable preamp, trigger out
• Trigger: In and out
• Dimensions (W × H × D): 440 × 125 × 400 mm
• Weight: 16.6 kg
• Finish: Black
Learn more about the M6si on the official Musical Fidelity website here.
Let us show you the remarkable Musical Fidelity M6si Dual-Mono at Len Wallis Audio. Explore our second-hand hi-fi & AV collection here or contact our team to audition the M6si at our Lane Cove showroom or enquire online.
Len Wallis Audio Excellence Promise
Since 1978, Len Wallis Audio has been a trusted name in hi-fi, curating premium audio solutions from our Lane Cove showroom in Sydney. For over four decades, we’ve selected products that deliver outstanding performance and quality.
Our focus on innovation ensures every item meets audiophile standards. Whether upgrading or building a new system, our team helps you find the ideal audio solution for your needs.
Experience the M6si in person with an audition at our Lane Cove showroom. With expert guidance and a commitment to satisfaction, we make your audio journey seamless and rewarding.
Ready for authoritative dual-mono performance with the Musical Fidelity M6si Dual-Mono Integrated Amplifier?
Call (02) 9427 6755
Email Sales@lenwallisaudio.com.au
Or visit us at 64 Burns Bay Road, Lane Cove, NSW, 2066
Generating expert take…
Musical Fidelity, a British hi-fi icon, traces its roots to 1982 when clarinettist and audio enthusiast Antony Michaelson founded the company in London. Disillusioned with the sound quality of existing gear after his stint at predecessor Michaelson & Austin, he handcrafted his debut product—a minimalist preamplifier dubbed "The Preamp"—on his kitchen table. Paired with the quirky Dr. Thomas power amplifier, these designs disrupted the market with their bold aesthetics and sonic punch, establishing Michaelson’s experimental ethos from the outset.
The brand has long centered on amplifiers as its cornerstone, spanning integrated, power, phono, headphone, and preamp models renowned for Class-AB topology and innovative touches like Nuvistor tubes. It expanded into streaming players, DACs, CD players, Bluetooth receivers, all-in-one systems, and even headphones and turntables, always prioritizing musicality over convention. Unconventional industrial designs, from curved heatsinks to sculptural panels, became signatures, influencing competitors.
Positioned firmly in the high-end arena, Musical Fidelity commands respect among discerning audiophiles for its value-driven performance and soulful sound. Iconic models like the A1 and F-series endure as collector favorites, blending accessibility with premium engineering. Acquired by Austria’s Audio Tuning in 2018, it continues evolving under new stewardship while honoring its heritage as a boutique force in British hi-fi.
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