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Krell KAV-300I Integrated Amplifier
• Product Overview – The Krell KAV-300I Integrated Amplifier was released in 1999 as a solid-state Class A/AB design, combining preamplifier and high-current power amplification for authoritative control and classic Krell drive.
• Amplification Performance – Delivering exceptional grip and dynamics, the amplifier provides effortless current delivery, wide bandwidth, and low noise, making it ideal for demanding loudspeakers and high-resolution analogue or digital sources.
• Build & Sonic Character – The Krell KAV-300I Integrated Amplifier features Krell’s robust power supply architecture, discrete circuitry, and minimalist signal path, resulting in tight bass, transparent midrange, and extended, controlled high frequencies.
• Specifications – Rated at approximately 150 W per channel into 8 ohms and 300 W into 4 ohms, with high-current output stages, wide frequency response, and stable operation into low-impedance speaker loads.
• Dimensions – Measures approximately 432 mm (W) × 178 mm (H) × 457 mm (D), requiring a sturdy, well-ventilated rack to accommodate its substantial chassis depth and heat dissipation.
• Weight – Weighs roughly 31 kg, reflecting its oversized transformer, large capacitor bank, and heavy aluminum chassis designed for mechanical stability and long-term electrical performance.
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Krell KSA200S Amplifier
• Product Overview – The Krell KSA200S Amplifier, released in 1995, is a solid-state pure Class A stereo power amplifier delivering legendary current capability, extreme control, and the authoritative sonic signature Krell is known for.
• Amplification Topology – Designed with massive power supplies and fully balanced circuitry, the KSA200S operates in continuous Class A, providing unwavering drive, low distortion, and exceptional loudspeaker control even under demanding loads.
• Sonic Performance – Krell KSA200S Amplifier delivers explosive dynamics, deep controlled bass, and a neutral tonal balance, excelling with difficult speakers and large-scale orchestral or rock recordings at realistic listening levels.
• Specifications – Rated at 200 watts per channel into 8 ohms, doubling into 4 ohms, with stable operation into 2 ohms, ultra-high current output, and extremely low output impedance for maximum damping factor.
• Dimensions – Chassis measures approximately 438 mm (W) × 197 mm (H) × 546 mm (D), reflecting the substantial heatsinking and transformer size required for sustained Class A operation.
• Weight – Weighs approximately 72 kg, with the extreme mass attributed to oversized transformers, extensive heatsinks, and heavy internal construction designed for thermal stability and long-term reliability.
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Mark Levinson No.53 Reference Monoblock
• Product Overview – Mark Levinson No.53 Reference Monoblock, released in 2009, is a solid-state Class D reference amplifier using proprietary PWM switching architecture, delivering extreme power, efficiency, and absolute control over demanding loudspeakers.
• Reference Engineering – Designed as a no-compromise statement, the amplifier employs separate digital control, analog audio, and power sections, ensuring ultra-low noise, massive current delivery, and exceptional stability under real-world loads.
• Sound Performance – Renowned for its effortless dynamics, expansive soundstage, and iron-fisted bass control, the Mark Levinson No.53 Reference Monoblock combines transparency with authority rarely achieved in high-power amplification.
• Specifications – Rated at 500 W into 8 ohms, 1000 W into 4 ohms, with stable operation into 2 ohms, ultra-wide bandwidth, low distortion, and advanced thermal and protection monitoring systems.
• Dimensions – Each chassis measures approximately 483 mm (W) × 241 mm (H) × 610 mm (D), featuring substantial heatsinking and an industrial-grade enclosure engineered for long-term reference operation.
• Weight – Each monoblock weighs approximately 61 kg, reflecting its massive power supply, high-density construction, and mechanical rigidity essential for vibration control and electrical stability.
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Fostex FE208
• Product Overview – Fostex FE208, released in 2002, is a high-sensitivity full-range driver designed for horn and back-loaded enclosures, prized for coherence, speed, and lifelike midrange reproduction.
• Sound Character – Designed for single-driver enthusiasts, this unit delivers exceptional immediacy, dynamic expression, and phase coherence, making it ideal for low-power tube amplifiers and minimalist signal paths.
• Driver Design – The FE208 features a lightweight paper cone, whizzer cone, and powerful ferrite motor system, enabling fast transient response and extended midrange clarity without crossover-induced phase distortion.
• Specifications – Nominal impedance is 8 ohms with sensitivity around 96 dB/W/m, supporting wide bandwidth performance and high efficiency, particularly suited for horn-loaded or high-efficiency loudspeaker designs.
• Dimensions – Driver diameter approximately 208 mm with standard mounting depth suitable for horn or large cabinet designs, allowing flexible integration into custom loudspeaker enclosures.
• Weight – Each driver weighs approximately 3 kg, with a rigid frame and motor assembly contributing to mechanical stability and controlled resonance behavior.
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Krell FPB MC250 Monoblock
• Overview – Krell FPB MC250 Monoblock, released in 2001, is a solid-state Class A/AB monaural power amplifier designed to deliver immense current capability, extreme control, and reference-level dynamics for demanding loudspeakers.
• Amplifier Topology – Built on Krell’s Full Power Balanced architecture, it operates in high-bias Class A before transitioning to Class AB, ensuring low distortion, fast transient response, and consistent performance across complex loads.
• System Authority – The Krell FPB MC250 Monoblock excels at driving low-impedance and difficult speakers, producing authoritative bass grip, wide dynamic headroom, and effortless scale without compression at realistic listening levels.
• Specifications – Rated at 250 watts into 8 ohms, doubling to 500 watts into 4 ohms and higher into lower impedances, featuring extremely high damping factor, wide bandwidth, and fully balanced discrete circuitry.
• Dimensions – Approx. 438 mm (W) × 305 mm (H) × 533 mm (D), housed in a massive aluminium chassis with extensive heatsinking and internal isolation for thermal stability and vibration control.
• Weight – Approximately 68 kg per monoblock, reflecting enormous transformers, capacitor banks, and Krell’s uncompromising mechanical construction required for sustained high-current operation.
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Quad 303 Power Amplifier and Quad 33 Preamplifier
Iconic Stereo Amplifier System – The Quad 303 and Quad 33 form a legendary solid-state power amplifier and control unit pairing. The Quad 303 is a classic, reliable power amplifier designed to deliver the famous Quad sound with authority and precision.
The Renowned “Quad Sound” – Experience the unique, fatigue-free musicality that made this system famous. Characterized by its exceptional clarity, natural tonal balance, and effortless delivery, it provides a listening experience that is both engaging and timeless.
Fully Serviced and Authentic – This matched pair has been professionally serviced to original factory specifications, ensuring optimal performance and reliability. You receive the authentic, iconic experience as intended by Quad’s pioneering engineers.
Versatile Control Unit – The Quad 33 preamplifier features comprehensive inputs, including a high-quality moving magnet phono stage for your turntable. Its flexible filtering and tone controls allow you to tailor the sound perfectly to your room and taste.
Classic Compact Dimensions – The Quad 303 power amplifier measures a compact 267mm wide, 133mm high, and 206mm deep. The matching Quad 33 control unit shares a similar elegant, minimalist footprint designed for a refined hi-fi rack setup.
Substantial Build Quality – The robustly built Quad 303 amplifier weighs 8.2 kg (18.1 lbs), reflecting its high-quality internal components and chassis. The Quad 33 control unit adds a further 3.4 kg (7.5 lbs), denoting its solid construction.
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Quad Elite Pre & QSP Power Amplifier
• Pre & Power Synergy – The Quad Elite Pre & QSP Power Amplifier system, released in 2011, delivers refined Class AB solid-state amplification with Quad’s hallmark neutrality, smoothness, and precise musical articulation across all genres.
• Elite Pre Transparency – The Elite Pre offers exceptionally low noise, wide bandwidth, and high input flexibility, ensuring clean signal handling and seamless integration with both analog and digital source components in modern hi-fi setups.
• QSP Current Dumping Power – The QSP features Quad’s updated Current Dumping topology, providing stable high current, excellent load tolerance, and natural, low-distortion dynamics, making it ideal for both bookshelf and floorstanding speakers.
• Musical Refinement – Together, the Quad Elite Pre & QSP Power Amplifier deliver holographic imaging, smooth midrange texture, and fast, controlled bass, offering a compelling upgrade path for audiophiles seeking classic Quad musicality.
• Dimensions – Elite Pre: approx. 321 × 70 × 310 mm. QSP: approx. 321 × 140 × 310 mm. Compact, rack-friendly sizing ensures simple placement in modern audio systems.
• Weight – Elite Pre around 5 kg; QSP approx. 11 kg. The solid chassis and robust transformer design enhance mechanical damping and improve long-term performance stability.
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Mark Levinson No. 5101
• Premium Digital Hub – The Mark Levinson No. 5101 combines a high-end CD player, network streamer, and DAC in one chassis, offering reference-grade digital playback with precision engineering and ultra-low-noise architecture.
• Advanced DAC Architecture – The unit employs a premium ESS Sabre DAC with fully balanced analog stages, delivering exceptional resolution, dynamic accuracy, and a refined tonal character suited for high-performance systems.
• Versatile Connectivity – With support for USB, coaxial, optical, and Ethernet streaming, the Mark Levinson No. 5101 integrates seamlessly into modern setups, ensuring flexible playback across multiple digital platforms.
• Robust Build Quality – Its heavy-machined aluminum chassis minimizes vibration and interference, enhancing overall sonic purity while maintaining the distinctive industrial aesthetic expected from Mark Levinson.
• Dimensions – Approx. 438 mm (W) × 130 mm (H) × 500 mm (D), offering a substantial footprint optimized for rigidity and internal component isolation.
• Weight – Around 16–18 kg, reflecting the premium power supply, reinforced chassis, and high-density digital circuitry.
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Krell KSL Pre Amp, FPB 200 Power Amp & KAV 300 CD Player
• Krell KSL Pre Amp, FPB 200 Power Amp & KAV 300 CD Player Overview – This early-2000s Krell trio delivers reference solid-state Class A/AB performance, combining authoritative power, ultra-low distortion, and exceptional transparency for serious high-end stereo systems.
• High-Resolution Preamplifier Clarity – The KSL preamp provides wide bandwidth, fully balanced circuitry, and a low-noise signal path, offering precise imaging, excellent channel separation, and a clean, neutral tonal balance suited for revealing systems.
• FPB 200 Class A/AB Power Authority – The Krell KSL Pre Amp, FPB 200 Power Amp & KAV 300 CD Player system is anchored by the FPB 200, delivering 200W per channel with Krell’s Sustained Plateau Bias for massive current and effortless control.
• Premium Digital Playback – The KAV 300 CD Player employs Krell’s advanced jitter-reduction, high-precision DAC architecture, and robust transport mechanism to produce detailed, dynamic, and musically engaging CD reproduction.
• Dimensions – KSL: approx. 432 × 76 × 381 mm. FPB 200: approx. 483 × 254 × 610 mm. KAV 300 CD: approx. 483 × 89 × 410 mm, all designed for rack-friendly installation.
• Weight – FPB 200 approx. 45–50 kg due to its massive transformers; KSL approx. 8 kg; KAV 300 CD approx. 10 kg, reflecting Krell’s heavy-duty, resonance-free construction.
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Mark Levinson No.37 CD Transport and No.36S DAC
• Mark Levinson No.37 CD Transport and No.36S DAC Overview – Released in the late 1990s, this reference digital front end delivers exceptional jitter control, precision clocking, and ultra-stable disc handling for audiophile-grade CD playback performance.
• High-Accuracy Transport Mechanism – The No.37 features a robust Philips CDM-Pro mechanism, advanced buffering, and isolated power supplies, ensuring precise data extraction and remarkably low digital noise for cleaner, more detailed sound.
• Reference-Grade DAC Architecture – The Mark Levinson No.37 CD Transport and No.36S DAC pairing uses discrete analog stages, dual-differential conversion, and heavy regulation to deliver natural timbre, deep imaging, and exceptional microdynamic resolution.
• Premium Levinson Engineering – Both units utilize thick aluminium chassis, multi-layer shielding, and mechanically isolated circuit boards, reducing vibration-induced errors and maintaining long-term reliability and sonic stability.
• Dimensions – Each chassis approx. 438 mm (W) × 102 mm (H) × 457 mm (D), providing space for isolated power sections, digital filtering stages, and robust mechanical transport components.
• Weight – Approx. 18–20 kg per unit, reflecting the massive power supplies, heavy shielding, and precision-machined chassis typical of Mark Levinson’s reference digital designs.
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Mark Levinson No. 320S
• Mark Levinson No. 320S Overview – The Mark Levinson No. 320S, introduced around 2005, is a reference solid-state preamplifier featuring dual-mono topology and ultra-low-noise circuitry for exceptional transparency, musical refinement, and dynamic control.
• Precision Dual-Mono Design – The Mark Levinson No. 320S employs completely isolated left/right signal paths, premium discrete analog stages, and advanced power regulation, delivering superior imaging, low distortion, and outstanding channel separation.
• High-Resolution Musicality – With its wide bandwidth circuitry and exceptional dynamic linearity, the Mark Levinson No. 320S preserves tonal accuracy, microdetail, and transient finesse, making it ideal for revealing high-end source components.
• Premium Build and Engineering – Featuring rigid aluminium chassis construction, resonance damping, and meticulously selected components, the No. 320S ensures long-term performance stability and a silent, interference-free operating environment.
• Dimensions – Approx. 438 mm (W) × 111 mm (H) × 508 mm (D), providing generous internal layout space for mechanical isolation and optimised signal integrity.
• Weight – Around 16 kg, reflecting the substantial power supply architecture, heavy shielding, and robust mechanical design.
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Quad 22L
• Quad 22L – A refined floorstanding loudspeaker known for its smooth tonal balance, articulate midrange, and engaging musicality, designed to deliver a natural, non-fatiguing presentation across diverse listening rooms.
• Dual-Driver Precision – Utilises a dedicated soft-dome tweeter and twin Kevlar mid/bass drivers, providing excellent clarity, controlled dispersion, and enhanced coherence for both vocal accuracy and full-range musical reproduction.
• Room-Friendly Design – Rear-ported enclosure enables flexible placement while maintaining solid low-frequency extension and rhythmic control, making it suitable for medium to large listening environments.
• Timeless Build Quality – High-quality cabinet construction with beautifully lacquered finishes offers reduced resonance, strong structural rigidity, and an elegant aesthetic aligned with Quad’s British engineering philosophy.
• Dimensions – Stands approximately 872 mm (H) × 203 mm (W) × 280 mm (D), optimised for stable floor placement and proper driver height relative to seated listening position.
• Weight – Each speaker weighs around 18 kg, providing the necessary mass for reduced cabinet vibrations and improved acoustic performance.
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Quad Elite Pre and QSP Amplifier
• Quad Elite Pre and QSP Amplifier – This solid-state Class AB pre–power combination delivers Quad’s signature natural clarity, refined musicality, and stable current delivery, offering an exceptional upgrade path for serious two-channel listeners.
• Precision Preamp Architecture – The Quad Elite Pre features low-noise gain stages, high-quality input switching, and tone-defeat options, ensuring clean signal handling and excellent transparency while maintaining Quad’s smooth, balanced sonic signature.
• High-Current Power Delivery – The QSP power amplifier provides 140W into 8Ω with Quad’s patented “Current Dumping” technology, offering exceptional grip, low distortion, and robust dynamics across demanding loudspeaker loads.
• System Synergy & Control – Together, the Quad Elite Pre and QSP Amplifier create a cohesive, full-bodied presentation with deep imaging, stable soundstaging, and reliable operation, ideal for music lovers seeking performance and long-term stability.
• Dimensions – Elite Pre: approx. 321 mm (W) × 310 mm (D) × 70 mm (H).
QSP: approx. 321 mm (W) × 310 mm (D) × 140 mm. Compact footprint for easy rack placement.
• Weight – Elite Pre approx. 4.5 kg; QSP approx. 12 kg. Solid chassis design minimizes vibration, enhancing component longevity and maintaining consistent audio performance.
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Mark Levinson No. 532H
• Mark Levinson No. 532H – This dual-mono Class AB stereo power amplifier delivers exceptional transparency, dynamic headroom, and control, engineered to drive demanding loudspeakers with authority while preserving musical finesse and tonal purity.
• Dual-Mono Output Architecture – Independent left and right channels with isolated power supplies minimize crosstalk and noise, ensuring superior imaging accuracy, channel separation, and a highly stable, low-distortion presentation.
• High-Current Power Delivery – Mark Levinson No. 532H is rated at 300W into 8Ω and 450W into 4Ω, the No. 532H provides deep dynamic reserves, tight bass control, and unwavering stability across complex speaker loads.
• Precision Harman Engineering – Premium components, rigid chassis construction, and advanced thermal management maintain consistent performance, delivering the signature Mark Levinson balance of weighty impact and refined musical detail.
• Dimensions – Approx. 460 mm (W) × 238 mm (H) × 508 mm (D). Large-format chassis supports substantial heat sinking and dual-mono internal layout.
• Weight – Approximately 50 kg, providing exceptional mechanical stability and vibration resistance for enhanced electrical performance and noise reduction.
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Krell KSA-300S Stereo Amplifier
• Krell KSA-300S Stereo Amplifier – This powerhouse Class A/AB sliding-bias design delivers massive current, exceptional control, and the unmistakable Krell authority, driving even the most demanding speakers with effortless precision.
• Sustained Power Delivery – Known for its enormous current reserves and stability into extremely low impedances, the KSA-300S provides grip, dynamics, and low-frequency impact unmatched by typical solid-state amplifiers of its era.
• Sophisticated Krell Topology – Featuring Krell’s proprietary Sustained Plateau Biasing, the amplifier achieves Class A performance at practical efficiency levels, offering transparency, speed, and refined musical detail.
• System Integration – Balanced and single-ended inputs, robust binding posts, and a highly inert chassis ensure quiet operation, excellent grounding, and seamless matching with high-end preamps and loudspeakers.
• Dimensions – Krell KSA-300S Stereo Amplifier Measures approximately 483 mm (W) × 241 mm (H) × 686 mm (D), requiring a sturdy rack with ample ventilation due to its substantial heat dissipation needs.
• Weight – Weighs roughly 68–70 kg, attributed to its heavy transformer architecture and oversized power supply, ensuring rock-solid stability and peak performance under demanding loads.
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Mark Levinson No. 5101
• Mark Levinson No. 5101 – The Mark Levinson No. 5101 is a premium Class A analogue output CD/SACD player and network streamer offering refined musicality, wide dynamic range and high-resolution playback for modern high-end audio systems.
• Digital Processing & Converter Performance – Using a high-performance ESS Sabre Pro DAC with precision clocking and isolated digital pathways, it delivers exceptional resolution, low noise and accurate imaging for CD, SACD and streamed content.
• Streaming Integration & Connectivity – Supporting UPnP, network streaming, USB playback, coaxial/optical inputs and robust analogue RCA/XLR outputs, the Mark Levinson No. 5101 integrates seamlessly into sophisticated digital and hybrid audiophile systems.
• Discrete Analogue Stage & Sonic Character – Featuring Mark Levinson’s discrete, fully balanced PurePath analogue stage, it provides rich tonal density, precise transient control and natural harmonic structure across all music genres.
• Product Dimensions – Measures 438 mm (W) × 133 mm (H) × 457 mm (D), offering a rigid, resonance-controlled chassis engineered for stability and quiet mechanical operation.
• Product Weight – Weighing approximately 15.7 kg, the equipment benefits from a robust linear power supply and heavy internal architecture, reducing vibration and improving overall sonic clarity.
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Mark Levinson No. 534
• Mark Levinson No. 534 – The Mark Levinson No. 534 is a fully discrete, Class AB dual-mono power amplifier delivering exceptional current capability, authoritative control and deeply layered musical textures suited for reference-grade audiophile systems.
• PurePath Circuit Topology – Using Mark Levinson’s PurePath architecture with fully discrete gain stages and massive power reserves, the Mark Levinson No. 534 achieves ultra-low distortion, striking transparency and lifelike spatial separation across complex recordings.
• Power Delivery & Dynamic Behaviour – Rated at 250W per channel into 8 ohms and doubling into 4 ohms, the Mark Levinson No. 534 provides high-current drive, excellent damping and effortless macro-dynamics for demanding loudspeakers.
• Construction & Noise Management – With separate left/right power supplies, air-core chokes and a rigid aluminium chassis, it minimises noise, vibration and thermal interference to maintain absolute signal integrity.
• Product Dimensions – Measures 356 mm (W) × 195 mm (H) × 507 mm (D), offering a substantial, resonance-controlled enclosure ideal for large racks and high-end dedicated audio systems.
• Product Weight – Weighing approximately 56.7 kg, It uses heavy linear power supplies and robust transformer architecture, enhancing stability, transient accuracy and overall sonic authority.
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Mark Levinson No.519 CD Player and Streamer
• Mark Levinson No.519 CD Player and Streamer – The Mark Levinson No.519 CD Player and Streamer combines reference-grade Redbook playback with advanced network streaming and a premium Class A analogue output stage for uncompromising audiophile digital performance.
• Digital Architecture & Conversion Quality – Using a high-performance ESS Sabre 32-bit DAC with discrete analog stages, the Mark Levinson No.519 CD Player and Streamer delivers exceptional resolution, wide dynamic headroom and precise imaging across all digital sources.
• Streaming Platform & Connectivity – Supporting USB, DLNA, AirPlay, Spotify Connect, aptX Bluetooth, coaxial/optical inputs, and full network streaming, the Mark Levinson No.519 CD Player and Streamer integrates seamlessly into advanced digital ecosystems with low-jitter signal paths.
• Operational Design & Sonic Transparency – Built with separate digital processing zones, linear power supplies and Mark Levinson’s discrete PurePath circuitry, the Mark Levinson No.519 CD Player and Streamer offers ultra-low noise, natural tonality and authoritative musical presentation.
• Product Dimensions – The Mark Levinson No.519 CD Player and Streamer measures 438 mm (W) × 133 mm (H) × 533 mm (D), providing a robust and stable chassis engineered to minimise resonance and vibration.
• Product Weight – Weighing approximately 18.7 kg, the Mark Levinson No.519 CD Player and Streamer features a heavy-duty steel and aluminium construction that enhances mechanical grounding, improving bass articulation and clarity.
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Fostex is a Japanese audio brand with deep roots in professional audio, transducer design, and precision manufacturing. Known for its work in loudspeaker drivers, studio monitors, and headphones, Fostex places strong emphasis on efficiency, accuracy, and controlled sound reproduction.
Fostex products are widely used across both consumer and professional environments, with many designs remaining in production or active use for extended periods. This longevity makes pre-owned Fostex equipment particularly relevant, as well-maintained drivers and headphones continue to deliver consistent performance long after release.
On SoundTribeAsia, Fostex equipment — new and pre-owned — is offered by verified dealers, allowing buyers to access trusted listings and transparent condition details through a curated regional marketplace.