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Soulnote M3 Mono Amplifier
• 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.
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SoulNote A-2 Ver. 2 Integrated Amplifier
Soulnote A-2 v2
Soulnote A-2 v2 is a fully balanced, non NFB integrated amplifier designed to preserve timing, texture, and dynamic swing while offering flexible operating modes for real systems.
Design and engineering
The A-2 v2 carries Soulnote’s discrete, wide bandwidth gain architecture with a short signal path and mechanical tuning derived from the Series 3 program. Revisions to device selection, biasing, and grounding reduce stored energy and lower audible residue, yielding cleaner transients and a more stable image.
What changed from A-2 (previous version)
The v2 platform strengthens current delivery and simplifies the voltage gain loop for higher purity. The driver stage also uses the same TO3P transistor as the output stage. By passing a large current through the driver, it instantly compensates for HFE fluctuations caused by current changes in the output stage. This is the biggest difference and breakthrough from the prior version. The power amp mode now hard bypasses selector and volume control for those who prefer a separate preamp. Chassis and top cover treatment improve resonance control compared to the earlier A-2.
Connectivity and control
Balanced and single ended inputs are relay switched, with a balanced attenuator for consistent channel tracking. Four modes cover integrated stereo, bi amp mono, power amp stereo, and power amp bi amp. Control logic is isolated so audio circuits remain quiet during operation.
What distinguishes it
Fast, high current drive with a lively, uncompressed presentation and the flexibility to act as a true power amp when required.
Who it is for
Listeners who value natural timing, wide bandwidth clarity, and the option to reconfigure the amplifier as their system evolves.
In the box
Main unit, metal remote control, AC power cable, spike feet, documentation.
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SoulNote RSC Speaker Cables (3m)
• Product Overview – SoulNote RSC Speaker Cables (3m), released in the late-2010s, reflect SoulNote’s purist design philosophy, focusing on ultra-low loss signal transfer, mechanical resonance control, and natural musical expression.
• Cable Design Philosophy – Built using high-purity copper conductors and SoulNote’s resonance-controlled construction, these cables minimise stored energy and phase distortion, preserving timing accuracy, dynamics, and tonal neutrality across wideband loudspeakers.
• Sonic Performance – The SoulNote RSC Speaker Cables (3m) deliver fast transient response, clean bass articulation, and an open midrange, making them ideal for revealing high-resolution systems that prioritise realism and rhythmic coherence.
• Specifications – Low-resistance conductor geometry, carefully managed inductance and capacitance, non-magnetic materials throughout, and mechanically damped structure to reduce vibration-induced coloration and maintain consistent electrical characteristics.
• Dimensions – Each cable is supplied in a 3-metre length, offering practical reach for most floorstanding speaker placements while maintaining consistent impedance and signal integrity throughout the full run.
• Weight – Moderate overall mass reflecting solid conductor density and damping materials, designed to provide stability without placing excessive mechanical stress on amplifier or loudspeaker binding posts.
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SOULNOTE D-3 DAC
• Overview – SOULNOTE D-3 DAC, released in 2020, is a reference-class digital-to-analog converter designed with SoulNote’s zero-feedback architecture to deliver highly accurate, ultra-low distortion conversion and musical transparency.
• Digital Architecture – Utilising discrete analogue filter stages and precision clocking, the D-3 DAC preserves timing integrity and dynamic expression, providing outstanding resolution and spatial coherence from PCM and DSD sources.
• Sound Quality – The SOULNOTE D-3 DAC is prized for its natural midrange clarity, refined treble extension, and low noise floor, allowing connected preamplifiers and amplifiers to reveal deeper musical nuance across genres.
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SOULNOTE A-3 Reference Integrated Amplifier
• Overview – SOULNOTE A-3 Reference Integrated Amplifier, released in 2021, is a solid-state Class AB integrated design without DAC or phono, engineered for ultimate signal purity and unrestricted current delivery.
• Circuit Philosophy – Built around SoulNote’s zero-feedback, non-parallel architecture, the amplifier prioritises instantaneous current response, wide bandwidth, and natural harmonic flow, appealing strongly to purist audiophiles.
• Sonic Character – SOULNOTE A-3 Reference Integrated Amplifier delivers exceptional dynamic contrast, dense tonal colour, and expansive soundstage depth, excelling with difficult loudspeaker loads and revealing high-resolution source components.
• Specifications – Rated at approximately 120 W per channel into 8 ohms and 240 W into 4 ohms, with ultra-high current capability, wide frequency response, and discrete output devices optimised for low impedance control.
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SoulNote A-1 Ver. 2 Integrated Amplifier
• Product Overview – SoulNote A-1 Ver. 2 Integrated Amplifier, released in 2022, is a solid-state Class AB integrated amplifier using Soulnote’s zero-feedback philosophy, delivering exceptional speed, transparency, and natural musical flow.
• Circuit Architecture – Designed with fully discrete, non-NFB circuitry and simplified signal paths, the amplifier prioritises phase accuracy, micro-dynamic resolution, and tonal purity, appealing to listeners seeking uncoloured, high-resolution playback.
• Sound Performance – The SoulNote A-1 Ver. 2 Integrated Amplifier offers agile bass control, vivid midrange articulation, and extended treble clarity, pairing effortlessly with revealing loudspeakers and high-quality digital or analog sources.
• Specifications – Output power is approximately 80 W per channel into 8 ohms and 160 W into 4 ohms, featuring wide bandwidth, high current delivery, and a robust linear power supply.
• Dimensions – Approximate chassis dimensions are 454 mm (W) × 179 mm (H) × 407 mm (D), housed in a resonance-controlled aluminium enclosure optimised for electrical stability and thermal management.
• Weight – The unit weighs approximately 24 kg, reflecting its substantial transformer, high-capacity power supply components, and rigid mechanical construction designed to minimise vibration and noise.
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Norstone Vintage Speaker Stands
• Overview – Norstone Vintage Speaker Stands, released in 2020, are retro-inspired loudspeaker supports combining classic aesthetics with modern rigidity, designed to improve speaker stability, resonance control, and overall sonic clarity.
• Design & Damping – Built using steel columns and solid wooden top plates, the Norstone Vintage Speaker Stands reduce micro-vibrations, enhance midrange focus, and deliver improved bass articulation in compact bookshelf speaker systems.
• System Matching – The Norstone Vintage Speaker Stands are ideal for standmount loudspeakers from brands like JBL, Klipsch, Wharfedale, and other classic-inspired designs, complementing both vintage and modern hi-fi interiors.
• Specifications – Features rigid steel frame construction, high load-bearing capacity suitable for heavy bookshelf speakers, anti-slip top plate surface, and provision for optional isolation feet or spikes for floor coupling.
• Dimensions – Overall dimensions (W x H x D): 380 x 260 x 280 mm, Rising height: 190 mm, max speaker weight is 60kg
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Norstone Epur 4 HiFi Rack
• Product Overview – The Norstone Epur 4 HiFi Rack, released in the late 2010s, is a four-tier equipment rack combining steel uprights and tempered glass shelves to provide stable, vibration-controlled support for hi-fi components.
• Rigid & Clean Construction – Featuring square steel columns and thick tempered glass platforms, the Epur 4 minimizes resonance and mechanical feedback, helping electronics perform with improved clarity, focus, and consistent tonal balance.
• Multi-Component Flexibility – Designed for full systems, the rack offers generous tier spacing for amplifiers, sources, and power supplies, while allowing effective airflow and tidy cable management in compact listening spaces.
• Modern Audiophile Aesthetics – The Norstone Epur 4 HiFi Rack blends minimalist design with functional engineering, making it suitable for contemporary interiors without compromising stability or long-term equipment support.
• Dimensions – Approx. 600 mm (W) × 450 mm (D) × 800 mm (H) overall, with shelf spacing optimized for standard-width hi-fi components and multi-box systems.
• Weight – Around 18 kg assembled, providing sufficient mass for vibration control while remaining practical to position and adjust within home audio environments.
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Norstone Bergen 2 Hifi Rack
• Product Overview – The Norstone Bergen 2 Hifi Rack, released in the late 2010s, is a compact modular equipment rack combining steel uprights and tempered glass shelves to support stable, vibration-controlled hi-fi system placement.
• Rigid Structural Design – Built with square steel columns and thick smoked glass shelves, the Bergen 2 Hifi Rack minimizes resonance, improves component stability, and enhances sonic clarity across both analogue and digital audio setups.
• Compact System Integration – Designed for space-conscious environments, the rack offers practical tier spacing, clean cable routing, and sufficient ventilation, making it ideal for integrated amplifiers, streamers, and compact power amplifiers.
• Everyday Audiophile Practicality – The Norstone Bergen 2 Hifi Rack supports moderate component weights while maintaining elegant aesthetics, providing a reliable and visually clean platform for modern living spaces.
• Dimensions – Approx. 600 mm (W) × 450 mm (D) × 400 mm (H) per shelf section, offering compatibility with standard-width hi-fi components and balanced vertical spacing.
• Weight – Roughly 15 kg assembled, delivering adequate mass for vibration control while remaining easy to position or relocate within home audio systems.
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Norstone Stabbl Hifi Rack
• Product Overview – The Norstone Stabbl Hifi Rack, released in the late 2010s, is a modular steel-and-wood equipment rack designed to provide high load capacity, excellent vibration control, and clean aesthetics for high-end audio systems.
• Rigid Modular Construction – Built with solid steel legs and thick bamboo shelves, the Stabbl Hifi Rack minimizes resonance and offers exceptional structural stability, allowing sensitive electronics to perform with improved clarity and dynamic consistency.
• Audiophile-Oriented Design – Each tier is height-adjustable, enabling flexible component placement, proper ventilation, and optimized cable routing while maintaining a mechanically grounded platform for amplifiers, source components, and power supplies.
• System Compatibility – The Norstone Stabbl Hifi Rack supports heavy power amplifiers and multi-box systems, providing reliable isolation and consistent performance benefits across both analogue and digital audio setups.
• Dimensions – Typical shelf dimensions are approximately 590 mm (W) × 490 mm (D), with adjustable height spacing per tier to accommodate large-format hi-fi components and power conditioners.
• Weight – Around 18–20 kg per module depending on configuration, delivering substantial mass for effective vibration damping and long-term mechanical stability.
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Norstone Stylum 3 Speaker Stand
• Product Overview – The Norstone Stylum 3 Speaker Stand, introduced in the mid-2010s, is a rigid steel loudspeaker stand engineered to improve stability, imaging focus, and bass control for stand-mount speakers.
• Rigid Steel Construction – Built with square-section steel columns and a heavy base plate, the Norstone Stylum 3 Speaker Stand reduces resonance and vibration, allowing speakers to perform with improved clarity, timing, and spatial precision.
• Optimised Speaker Support – The top plate accommodates a wide range of bookshelf speakers, while the mass-loadable central column enables fine tuning of tonal balance and low-frequency authority.
• Practical Audiophile Design – Adjustable floor spikes provide secure coupling on carpeted or solid floors, ensuring consistent speaker positioning and reliable performance in dedicated listening rooms or mixed-use spaces.
• Dimensions – 730 mm height with a top plate around 165 × 220 mm and a wide base for enhanced stability and correct tweeter ear-level alignment.
• Weight – Roughly 7 kg per stand, offering sufficient mass to control resonance while remaining manageable for installation and repositioning.
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Stello Ai500 Integrated Amplifier
• High-End Integration – The Stello Ai500 Integrated Amplifier is a solid-state Class AB design released around 2010, featuring a built-in DAC and delivering powerful, transparent amplification suited for high-resolution systems.
• Refined DAC Section – Incorporating a high-quality 24/192 DAC, the Ai500 processes digital sources with exceptional clarity, low jitter, and improved transparency, offering a clean, detailed presentation across all music genres.
• Robust Amplification – The Stello Ai500 delivers authoritative current output and dynamic control, allowing it to drive a wide range of speakers while maintaining tonal accuracy, stability, and rhythmic precision.
• Audiophile Build Quality – Its thick aluminum chassis, vibration-resistant structure, and premium internal components enhance signal purity and ensure long-term reliability, making it an excellent centerpiece for modern listening rooms.
• Dimensions – Approx. 430 mm (W) × 100 mm (H) × 330 mm (D), providing a compact yet substantial footprint compatible with standard high-end audio racks.
• Weight – Around 12–14 kg due to its solid aluminum enclosure and high-quality transformer, contributing to improved damping and mechanical stability.
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Adcom GFP-555 Preamp and GFA-5800 Power Amp
• Classic Adcom System – The Adcom GFP-555 Preamp and GFA-5800 Power Amp, introduced in the early 1990s, deliver robust solid-state performance with high-current Class AB amplification, offering strong dynamics and clean, authoritative control.
• High-Resolution Preamp Design – The GFP-555 features low-noise circuitry, precise tone controls, a high-quality phono stage, and multiple inputs, giving the Adcom GFP-555 Preamp and GFA-5800 Power Amp excellent system flexibility.
• Powerful Amplification – The GFA-5800, designed by Nelson Pass, provides 250W per channel into 8 ohms with massive current reserves. This ensures the Adcom GFP-555 Preamp and GFA-5800 Power Amp can drive difficult speakers with ease.
• Musical, Neutral Presentation – The pairing delivers fast transient response, wide soundstage, and neutral tonal balance, making it a sought-after vintage combo for both audiophiles and collectors seeking reliable performance.
• Dimensions – Preamp: approx. 432 × 89 × 330 mm. Power amp: approx. 432 × 203 × 483 mm. Designed to fit standard audio racks with deep shelves.
• Weight – Preamp weighs about 7 kg; power amp around 28–30 kg, thanks to its heavy transformer and large heat sinks for stable high-current operation.
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Adcom GFP-345 Pre-Amp and GFA-535 mk2 Amplifier
• Adcom GFP-345 Pre-Amp and GFA-535 Mk2 Amplifier – A classic solid-state pairing featuring a fully Class AB power stage, offering clean, authoritative drive and exceptional value for enthusiasts seeking transparent, reliable high-fidelity performance.
• Refined Preamp Control – The GFP-345 provides precise volume management, clean signal routing, high-quality phono stage support, and low-noise circuitry, enabling a neutral presentation with impressive musical clarity across varied source components.
• Dynamic Class AB Power – The GFA-535 Mk2 delivers approximately 60W per channel into 8 ohms with robust current delivery, maintaining excellent channel separation, punchy dynamics, and stable operation even with moderately difficult loudspeaker loads.
• Synergistic System Performance – Together, the GFP-345 and GFA-535 Mk2 create a cohesive soundstage with firm bass control, open midrange, and smooth treble, making this combo a proven choice for budget-conscious yet discerning listeners.
• Dimensions – GFP-345: approx. 432 mm (W) × 76 mm (H) × 330 mm (D). GFA-535 Mk2: approx. 432 mm (W) × 140 mm (H) × 330 mm (D). Fits standard racks comfortably.
• Weight – GFP-345 weighs around 5–6 kg, while GFA-535 Mk2 weighs roughly 10–11 kg, with a solid transformer and steel chassis enhancing durability and vibration resistance.
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NorStone ESSE HiFi Rack (4 Tier)
• NorStone ESSE HiFi Rack (4 Tier) – A high-quality hi-fi furniture solution built with gloss-black epoxy-lacquered steel and tempered glass shelves, offering clean aesthetics and functional support for serious audio systems.
• Audio-System Ready Construction – The rack’s design separates electronics across four levels, helping improve ventilation and reduce mechanical and electrical interference—ideal for high-fidelity audio setups.
• Dimensions & Shelf Capacity – External size of 570 mm (W) × 860 mm (H) × 400 mm (D) with shelf spacing of 222 mm; upper shelf rated at 20 kg, internal shelves 20 kg each, and bottom shelf 40 kg.
• Load Rating & Stability – Each glass shelf supports substantial weight (bottom shelf up to 40 kg) with a net rack weight ~23.3 kg, providing stable, vibration-resistant support for components.
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Adcom is an American audio electronics brand known for delivering high-current amplification and robust engineering at accessible price points. Rising to prominence through its power amplifiers and preamplifiers, Adcom focused on reliability, drive capability, and straightforward circuit design.
Adcom amplifiers are built with conservative engineering margins and substantial power supplies, allowing many models to remain in active use decades after release. This makes pre-owned Adcom equipment especially attractive to listeners seeking dependable amplification with lasting performance.
Across Singapore, Malaysia, and Southeast Asia, Adcom continues to appeal to value-conscious audiophiles building reliable systems. On SoundTribeAsia, Adcom equipment — new and pre-owned — is offered by verified dealers, providing transparent listings and trusted access through a regional marketplace.