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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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Airtight ATM4 Tube Amplifier
• Product Overview – Airtight ATM4 Tube Amplifier, released in 1998, is a solidly engineered Class AB push-pull tube power amplifier using EL34 output valves, renowned for musical coherence, tonal purity, and long-term reliability.
• Circuit Topology – Hand-wired point-to-point construction with high-quality output transformers and conservative operating parameters ensures low distortion, excellent bandwidth, and stable performance across a wide range of loudspeaker loads.
• Sonic Performance – Airtight ATM4 Tube Amplifier delivers a harmonically rich midrange, controlled bass authority, and smooth extended treble, excelling in realism, spatial depth, and long, fatigue-free listening sessions.
• Specifications – Stereo power output approximately 36 watts per channel into 8 ohms, EL34 output tubes, 4/8 ohm taps, wide bandwidth response, and high-quality valve rectification supporting dynamic musical transients.
• Dimensions – Approx. 360 mm (W) × 220 mm (H) × 310 mm (D), featuring a compact yet robust chassis layout optimized for heat dissipation and mechanical stability.
• Weight – Approximately 21 kg, reflecting heavy-duty transformers, thick chassis materials, and conservative mechanical design essential for stable tube operation and long-term sonic consistency.
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Acoustical Systems AXIOM 12″ Reference Tonearm
• Product Overview – The Acoustical Systems AXIOM 12” Reference Tonearm, launched in 2014, features a fully adjustable geometry design, ultra-rigid construction, and reference-grade engineering to optimize cartridge alignment and tracking precision.
• Advanced Geometry – Incorporating UNIDIN alignment architecture, the AXIOM achieves reduced tracing error and distortion across the record surface, giving more linear, dynamic, and tonally accurate analogue reproduction.
• Mechanical Excellence – Its hybrid bearing system combines ceramic, ruby, and precision metal components, delivering exceptionally low friction, ultra-stable movement, and enhanced micro-detail retrieval from both MC and MM cartridges.
• Resonance Optimization – The Acoustical Systems AXIOM 12″ Reference Tonearm multi-material construction and internal damping network minimize structural resonance, improving spatial realism, transient accuracy, and low-level resolution in high-end turntable setups.
• Dimensions – Effective length approximately 305 mm (12”), adjustable mounting distance around 291 mm, engineered for compatibility with premium high-mass and reference-grade turntable platforms.
• Weight – Approx. 650–750 g depending on configuration, providing optimal counterbalance capability and mechanical grounding for precision tracking performance.
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Melco N100-H20 (2TB) Library and Elite Plixir LPS
• Melco N100-H20 (2TB) Library and Elite Plixir LPS Overview – The Melco N100-H20, introduced in 2018, is a high-performance digital music library whose performance is significantly elevated with the Elite Plixir LPS linear power supply for ultra-low-noise operation.
• Bit-Perfect Music Storage – Designed as a dedicated audiophile server, the Melco N100-H20 provides isolated data paths, optimized Ethernet architecture, and a 2TB HDD for quiet, reliable, bit-perfect music delivery to high-end DACs.
• Improved Power Delivery with Plixir – The Elite Plixir LPS supplies exceptionally clean DC power, reducing noise, enhancing micro-detail, and improving timing accuracy—unlocking far greater transparency and refinement from the Melco platform.
• Seamless Integration & Control – Compatible with UPnP playback, Roon (via bridge), and Melco’s app ecosystem, ensuring stable streaming, low jitter, and superior data handling with both USB and network-based playback systems.
• Dimensions – Melco N100: approx. 215 mm (W) × 61 mm (H) × 269 mm (D). Plixir LPS: approx. 220 mm (W) × 80 mm (H) × 260 mm (D), both compact for versatile rack placement.
• Weight – Melco N100 approx. 3.5 kg; Plixir LPS approx. 5–6 kg. The heavier toroidal design of the Plixir LPS enhances stability and isolation from electrical noise.
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CEC TL5 CD Transport
• High-Precision Transport Overview – The CEC TL5 CD Transport features the brand’s acclaimed belt-drive mechanism, delivering smooth disc rotation, reduced vibration and highly stable digital extraction for exceptionally natural and fluid CD playback.
• Belt-Drive Digital Extraction – Its unique belt-driven transport minimises mechanical noise and rotational irregularities, improving jitter performance, tonal purity and musical flow, with one mention of CEC TL5 CD Transport enhancing digital accuracy.
• Digital Output Flexibility – Offering coaxial, optical and AES/EBU outputs, the unit integrates seamlessly with high-end DACs, maintaining clock stability and delivering clean, low-noise digital transmission, plus one additional mention of CEC TL5 CD Transport.
• Vibration-Controlled Chassis – The rigid enclosure and isolated transport assembly provide excellent resonance control, ensuring stable disc reading and improved transparency across complex or dynamic musical passages.
• Product Dimensions – Measuring approximately 435 mm (W) × 335 mm (D) × 109 mm (H), the chassis fits comfortably into standard hi-fi racks while providing adequate ventilation for stable operation.
• Product Weight – Weighing about 7.4 kg, the well-damped structure enhances mechanical stability, reduces micro-vibrations and contributes to the unit’s refined and fluid sonic character.
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Acoustical Systems is a German analog audio manufacturer specialising in precision tonearms, cartridges, and vinyl playback accessories. The brand’s philosophy is grounded in mechanical accuracy, material science, and fine tolerances, treating analog playback as an engineering discipline rather than nostalgia.
Acoustical Systems products are designed for extreme durability and long-term relevance, often using exotic materials and precision machining. Because these components are based on mechanical fundamentals, pre-owned Acoustical Systems equipment remains highly desirable and continues to perform at reference levels when properly maintained.
Across Singapore, Malaysia, and Southeast Asia, Acoustical Systems is respected among serious vinyl enthusiasts building no-compromise analog front ends. On SoundTribeAsia, Acoustical Systems products — new and pre-owned — are offered by verified dealers, providing transparent listings and trusted access through a curated regional marketplace.