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• Overview – The Soulnote M3 Mono Amplifier, released in 2019, is a solid state pure Class A monoblock design engineered with zero global feedback topology to deliver ultra-fast transient response and uncompromised musical transparency.
• Circuit Architecture – Built around Soulnote’s non-parallel push-pull output stage and discrete driver design, the amplifier emphasizes instantaneous current delivery, wide bandwidth, and exceptionally low phase distortion.
• Sonic Character – The Soulnote M3 Mono Amplifier is celebrated for explosive dynamics, deep tonal saturation, and expansive soundstage layering, making it ideal for high-resolution loudspeakers requiring precision and authority.
• Specifications – Pure Class A solid state topology, approximately 200W into 8Ω and 400W into 4Ω, wide frequency response beyond 20Hz–100kHz, extremely low distortion, and high current capability for difficult loads.
• Dimensions – Each chassis measures approximately 454 mm wide × 189 mm high × 430 mm deep, requiring generous ventilation to support continuous Class A thermal operation.
• Weight – Each monoblock weighs roughly 32 kg, reflecting oversized transformers, heavy aluminum construction, and substantial heat sinking for stable, long-term performance.
At S$28,800, this sits well above your used-market anchor of S$8,697 median and S$15,198 at the 75th percentile, so it reads as ambitious rather than fair in the current SGD market. For a buyer, that means you’d want a very specific reason to pay up: exceptional condition, complete packaging, recent servicing, or a setup where this amp is the clear long-term endgame.
What makes it interesting is the line’s reputation for serious, no-nonsense high-current drive and a refined, authoritative presentation that suits speakers needing real control and scale. If the listing is genuinely like-new and includes all original accessories, that helps, but at this price the premium only makes sense for a buyer chasing rarity and top-condition provenance.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Soulnote is a Japanese high-end audio manufacturer established in 2004 by former Marantz Japan engineers under the parent company CSR, Inc., headquartered in Sagamihara City, Kanagawa Prefecture. The brand emerged from deep expertise in professional audio development, with Chief Sound Manager Hideki Kato bringing decades of experience from legendary amplifier projects at NEC and Philips. This heritage positions Soulnote as a brand rooted in serious engineering pedigree, though operating as a relatively boutique player with approximately 50 employees.
Soulnote specializes primarily in amplifiers and digital-to-analog converters, with a distinctive focus on integrated and mono amplifiers built entirely in Japan. The brand is particularly known for its zero negative feedback circuit design philosophy, a purist approach that sets it apart from mainstream manufacturers. Their product line includes models such as the A-2 integrated amplifier and various DAC offerings, all designed with an emphasis on dynamic performance and waveform accuracy.
Positioned firmly in the high-end segment, Soulnote occupies a niche boutique space within the audiophile market. The brand has cultivated a dedicated following among listeners who prioritize listening-based design methodology over conventional measurement standards—a philosophy that generates both passionate advocacy and skepticism within the audio community. With international distribution networks and approximately two decades of market presence, Soulnote maintains credibility among discerning enthusiasts, though it remains less established than major high-end manufacturers in terms of global recognition and support infrastructure.
See all SoulNote listings on RADAR.
