Soulnote M-3 Monoblock Amplifier
Best monoblock amplifier for audiophiles seeking pure, emotionally resonant sound.
Experience deeply emotional playback with the Soulnote M-3 Monoblock Power Amplifier. Engineered for high-end loudspeakers, this amplifier boasts a pure non-negative feedback single push-pull structure and industrial-grade can-type output transistors. Its design prioritizes simplicity, featuring copper plate heat sinks that double as bus bars for enhanced stability. A 1600 VA toroidal transformer, isolated by titanium washers, delivers robust power. The M-3's separate amplifier container and chassis are grounded by three spikes, ensuring superior sonic isolation for an uncompromised listening experience.
$24999.00
Owner Satisfaction
4.8
/ 5
Category Rank
167
/ 1683
#167 in Power Amplifiers
Price vs Category Average
+203%
Above average
Maximum Output
1604
/ W (Ω)
Who it's for
- Audiophiles seeking natural, distortion-free sound and fast transient response
- Listeners powering demanding, low-impedance speakers needing stable current
- Purists prioritizing premium components and resonance-free chassis construction
Who should skip it
- Budget-conscious buyers looking for more accessible high-end amplification
- Owners with limited rack space or restricted equipment placement options
- Users with small, poorly ventilated rooms or enclosed cabinet setups
Performance breakdown
Sonic Transparency
Non-negative feedback design preserves the natural texture of every musical note.
Power Delivery
Massive toroidal transformer ensures effortless control over demanding high-end loudspeaker loads.
Vibration Isolation
Titanium-suspended transformer and spiked chassis eliminate unwanted mechanical resonance.
Build Integrity
Industrial-grade components and copper bus bars reflect uncompromising engineering standards.
Signal Purity
Minimalist circuitry path prevents signal degradation for a pristine listening experience.
Operational Simplicity
Stripped-back controls prioritize pure performance over unnecessary modern feature clutter.
Key Specs
Maximum Output
160W (4Ω)
Frequency Characteristic
2Hz – 200kHz (±1dB)
Total Harmonic Distortion
0.1% (1W)
Input Sensitivity / Impedance
1V / 25kΩ
Power Supply
1600 VA toroidal transformer
Weight
31kg
Dimensions
340 (W) × 251 (H) × 512 (D) mm
Amplifier Class
Class A
Features
- Delivers emotional playback from high-end speakers
- Perfect non-negative feedback single push-pull structure
- Industrial grade can-type output transistors
- Copper plate heat sinks double as bus bars
- Voltage amplification uses new Type-R circuits
- Extremely simple construction with minimal controls
- Physically separate amplifier container for isolation
- Power transformer suspended on titanium washers
What customers say
The Soulnote M-3 Monoblock Amplifier earns enthusiastic praise as a reference component delivering breathtaking transparency and dynamic realism. Users consistently note the amplifier's ability to disappear, allowing music to emerge with startling immediacy and natural timbre. A key point of admiration is the non-Negative Feedback circuitry, which contributes to exceptional purity and lack of artificial coloration. The M-3 handles complex passages with effortless control, offering powerful bass alongside delicate detail. While a significant investment, enthusiasts feel its performance rivals or exceeds much costlier amplifiers, establishing strong value in the ultra-high-end market. Its extreme resolution demands quality upstream gear, confirming its fidelity. Overall, the M-3 is celebrated for profound emotional engagement and technical mastery.
Know before you buy
By removing negative feedback, the M-3 avoids the phase distortion and timing errors often introduced by feedback loops. This results in a more natural, open soundstage and a sense of realism that feels closer to a live performance.
Because the M-3 is a single-channel monoblock, you will need to purchase two units to achieve a stereo configuration. This design is preferred by audiophiles because it provides complete channel separation and eliminates crosstalk between the left and right signals.
These components are designed to mechanically isolate the sensitive amplifier circuitry from external vibrations. By decoupling the transformer and grounding the chassis through spikes, the M-3 minimizes microphonic interference, leading to a cleaner, more precise signal.
The M-3 is optimized for 4-ohm loads and delivers 160 watts of power, making it well-suited for demanding high-end speakers. However, you should verify that your speakers perform optimally within this impedance range to ensure the best synergy.
Beyond their primary role in thermal management, these copper plates function as high-conductivity bus bars. This dual-purpose design reduces internal wiring and lowers electrical resistance, which helps maintain a stable, high-current flow to the output transistors.
Given its weight of 31kg and the use of spike feet, you should place the M-3 on a sturdy, level surface that can support its mass. Additionally, ensure you have adequate ventilation space around the unit, as the Class A operation generates significant heat during normal use.
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