The Musical Fidelity M2si Integrated Amplifier sets a new benchmark in performance-for-value hi-fi amplification. Designed with a fully discrete Class A/B power stage and a low-noise preamplifier with its own dedicated power supply, the M2si delivers up to 76 W per channel into 8 Ω and 137 W into 4 Ω, allowing it to comfortably drive a wide variety of speaker systems — even demanding, low-efficiency models. Musical Fidelity+1

What makes the M2si stand out is its uncompromising analogue performance: it avoids unnecessary digital circuitry and phono stages to preserve audio purity. The result is a sound that’s detailed, dynamic and full of musical nuance — from delicate acoustic passages to full orchestral crescendos. Musical Fidelity

Crafted with a solid metal chassis, extruded aluminum front panel and premium Burr-Brown stepped attenuator, this amplifier combines rugged build quality with refined ergonomics and sonic performance. Whether you’re building a high-end stereo system or upgrading your existing setup, the M2si delivers exceptional power and fidelity for music lovers. Musical Fidelity


📌 Key Features & Benefits

🔊 Performance & Power

  • Fully discrete Class A/B amplifier design for rich, dynamic audio performance. Musical Fidelity

  • 76 W per channel (8 Ω) & 137 W per channel (4 Ω) delivers ample power for most speakers. www.av.com

  • High current delivery & dynamic range ensures impactful, expressive sound. Musical Fidelity

🎶 Pure Analogue Sound

  • Low-noise preamp with dedicated PSU reduces distortion and improves clarity. Musical Fidelity

  • No built-in DAC or phono stage — designed for pure high-fidelity analog sources. Musical Fidelity

  • Burr-Brown stepped attenuator for precise and matched channel control. Musical Fidelity

🔌 Versatile Connectivity

  • 6× RCA line-level inputs for multiple sources. www.av.com

  • Switchable home-theatre (HT) bypass input – great for use with AV processors. www.av.com

  • Pre-Out for bi-amping or active subwoofer flexibility. www.av.com

  • Speaker outputs fit banana, spade or bare wire cables. www.av.com

🧰 Build Quality & Usability


📊 Specifications

Specification Details
Amplifier Type Integrated Stereo Amplifier (Class A/B)
Output Power 76 W/Ch @ 8 Ω / 137 W/Ch @ 4 Ω www.av.com
THD+N <0.014% typical www.av.com
Signal-to-Noise Ratio >96 dB ‘A’-weighted www.av.com
Inputs 6× RCA Line-Level www.av.com
Outputs Pre-Out / Fixed Line Out / Speaker Binding Posts www.av.com
Power Requirements 115/230 VAC 50/60 Hz www.av.com
Dimensions 440 × 100 × 400 mm www.av.com
Weight 9.2 kg (unit) / 13 kg (boxed) www.av.com

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