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Naim Audio NAC42 Pre-Amplifier and NAP140 Power Amplifier
• Naim Audio NAC42 Pre-Amplifier and NAP140 Power Amplifier – This iconic pairing defines vintage British hifi precision, combining the NAC42’s finely tuned analogue front-end with the NAP140’s solid Class AB stereo power stage to deliver Naim’s signature pace, rhythm and timing.
• Class AB Power Stage Explained – The NAP140 delivers approximately 45 W per channel into 8 Ω (70 W into 4 Ω) with a quasi-complementary design and low-impedance multi-cap filtering, offering dynamic control with compact housing.
• Disciplined Analogue Control Module – The NAC42 features discrete transistor circuitry, minimal signal path architecture and compatibility with Naim’s external SNAPS/Hi-Cap power systems, enabling system upgrades while maintaining transparency and coherence.
• Upgrade-Ready Architecture – Both units are designed with modular serviceability and Naim ecosystem compatibility in mind, allowing the addition of Hi-Cap, SuperCap and later Naim upgrades for deeper musical refinement.
• Product Dimensions – Each unit measures approximately 207 × 87 × 314 mm (W × H × D), making them compact yet acoustically grounded components suitable for serious systems.
• Weight – The NAC42 weighs around 2.5 kg, while the NAP140 weighs roughly 5.5 kg, providing a stable mechanical platform and low vibration for optimum signal fidelity.
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Denon AVR-4520 9.2 channels AV Receiver
• Denon AVR-4520 9.2 Channels AV Receiver – A flagship home-theatre receiver delivering powerful 9.2-channel processing, advanced surround formats, and premium build quality aimed at users seeking reference-grade cinema and music performance.
• High-Performance Amplification – Features nine discrete Class AB amplifier channels rated at 150W per channel (8Ω, 20Hz–20kHz, 0.05% THD), providing exceptional control over large, demanding loudspeakers in multichannel setups.
• Advanced Surround & Processing – Supports Audyssey MultEQ XT32 room correction, Audyssey DSX, Dolby TrueHD, DTS-HD Master Audio, 9.2 pre-outs, and full 4K video pass-through, enabling immersive cinema sound with precision tuning.
• Connectivity & Integration – Equipped with 7 HDMI inputs, 3 HDMI outputs, network streaming, AirPlay, DLNA, USB playback, multi-zone capabilities, and flexible assignment for complex home-theatre layouts.
• Product Dimensions – Measures approximately 434 mm (W) × 167 mm (H) × 389 mm (D), fitting seamlessly into AV racks while providing sufficient airflow for high-power operation.
• Weight – Weighs around 17.6 kg, offering a robust transformer, rigid chassis, and mechanical stability to minimize vibration and maintain clean audio output.
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Harman Kardon Citation 16 Power Amplifier
• Product Overview – The Harman Kardon Citation 16 Power Amplifier, released in 1976, is a solid-state Class AB design delivering high-current performance, wide bandwidth, and the authoritative control that defined Harman Kardon’s classic Citation series.
• High-Current Performance – Designed by Matti Otala, this amplifier is renowned for its low TIM distortion, fast transient response, and effortless dynamic swing, making it especially capable with demanding loudspeaker loads.
• Build & Sonic Character – The Harman Kardon Citation 16 Power Amplifier features a dual-mono layout with oversized power supply, producing a neutral, powerful, and tightly controlled sound that remains respected among vintage audiophiles.
• Specifications – Rated at approximately 150 watts per channel into 8 ohms and stable into 4 ohms, with wide frequency response and very low distortion for its era, emphasizing clean, unstrained power delivery.
• Dimensions – Measures approximately 445 mm (W) × 178 mm (H) × 406 mm (D), occupying a full-width chassis with substantial depth to accommodate its large transformer and heat dissipation requirements.
• Weight – Weighs roughly 27 kg, reflecting the heavy-duty power transformer, robust output stage, and solid steel chassis construction typical of high-end amplifiers from the Citation lineage.
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Musical Fidelity A120 10th Anniversary Integrated Amplifier
• Overview – The Musical Fidelity A120 10th Anniversary Integrated Amplifier is a British-engineered pure Class A design from the mid-1990s, renowned for warm, refined musicality, detailed midrange and engaging analog-like character.
• Sound Profile – This A120 edition delivers exceptionally natural tonal balance, rich harmonic texture and smooth dynamics that reward careful system matching, especially with full-range floorstanders and bookshelf speakers.
• Feature Set – It includes a versatile analog input suite with dedicated MM/MC phono stage, multiple line inputs and robust discrete amplification topology tailored for high-fidelity two-channel listening without digital artifacts.
• Specifications – Classic pure Class A architecture produces ~40 W per channel, high current capability, broad frequency response, low noise floor with strong stereo imaging, and internal heat management that supports consistent performance.
• Dimensions – Amplifier chassis measures approximately 430–450 mm wide × ~100–130 mm high × ~300–350 mm deep, designed to fit standard hi-fi shelving with ample ventilation for Class A operation.
• Weight – Robust construction features a heavy-duty power supply and large heatsinks; unit weight sits around 15–18 kg, emphasizing solid build quality and vibration resistance.
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Rogers Cadet III Tube Integrated Amplifier
• Overview – The Rogers Cadet III Tube Integrated Amplifier, released in 1965, is a Class AB tube integrated amplifier featuring EL84 output tubes and built-in phono stage for classic British analogue performance.
• Classic Valve Amplification – Utilizing EL84 output valves and ECC83 preamp tubes, the Rogers Cadet III Tube Integrated Amplifier delivers warm midrange, smooth treble, and engaging musicality highly regarded by vintage audio enthusiasts.
• Vintage British Engineering – The Rogers Cadet III Tube Integrated Amplifier combines compact construction with minimalist circuitry, producing a natural tonal presentation ideal for efficient loudspeakers and intimate listening environments.
• Specifications – Approximately 10–12W per channel into 8 ohms, Class AB tube topology, EL84 output tubes, integrated MM phono stage, multiple analogue inputs, frequency response approximately 20Hz–20kHz.
• Dimensions – Approximately 305 mm (W) × 140 mm (H) × 230 mm (D), featuring a compact chassis layout with exposed transformers and accessible tube placement for maintenance.
• Weight – Approximately 7–9 kg, reflecting solid transformer construction and durable metal chassis design typical of classic British valve amplifiers from the 1960s.
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Anatek A50 Integrated Amplifier
• Overview – The Anatek A50 Integrated Amplifier, released in the late 1990s, is a solid-state Class AB integrated amplifier featuring a pure analogue signal path, designed to deliver musical performance and reliable everyday operation.
• British Audio Engineering – Built with a minimalist circuit philosophy, the Anatek A50 Integrated Amplifier emphasizes signal purity and short signal paths, resulting in a natural, engaging presentation with excellent rhythmic coherence.
• Musical Sound Quality – The Anatek A50 Integrated Amplifier is known for its smooth midrange, controlled bass response, and detailed treble, making it a capable partner for a wide variety of bookshelf and floorstanding loudspeakers.
• Specifications – 50W per channel into 8 ohms, Class AB solid-state topology, multiple line-level RCA inputs, frequency response approximately 20Hz–20kHz, low distortion design, high-current output stage for stable speaker control.
• Dimensions – Approximately 430 mm (W) × 90 mm (H) × 300 mm (D), featuring a compact full-width chassis suitable for standard hi-fi racks and space-conscious audio systems.
• Weight – Approximately 6–8 kg, reflecting solid construction, quality internal components, and a well-regulated power supply designed for long-term reliability.
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AudioSpace AS-9 MK3
• AudioSpace AS-9 MK3 Overview – The AudioSpace AS-9 MK3, a Class A tube integrated amplifier released in the mid-2010s, features EL34 output tubes and a built-in phono stage, delivering warm, detailed, and harmonically rich musical reproduction.
• Refined Tube Architecture – Using high-grade EL34 power tubes and 12AX7/12AU7 driver stages, the AS-9 MK3 achieves excellent linearity, wide soundstage depth, and smooth treble energy suited for acoustic and vocal listening.
• Exceptional Musical Coherence – The AudioSpace AS-9 MK3 enhances midrange presence and low-level detail, producing a natural tonal balance with impressive microdynamics, making it ideal for pairing with sensitive or high-efficiency loudspeakers.
• Premium Build and Craftsmanship – Featuring point-to-point wiring, robust transformers, and a resonance-controlled chassis, the amplifier ensures long-term reliability, low noise, and stable tube operation under demanding listening conditions.
• Dimensions – Approx. 380 mm (W) × 295 mm (D) × 220 mm (H), offering a compact yet substantial footprint that accommodates the transformer layout and internal tube architecture effectively.
• Weight – Around 23–25 kg due to its heavy-duty power supply and output transformers, contributing to improved current delivery and mechanical stability during playback.
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Naim Audio NAC122X Preamplifier and NAP150X Power Amplifier
• Product Overview – The Naim Audio NAC122X Preamplifier and NAP150X Power Amplifier, released in 2006, is a solid-state Class AB separates combination delivering classic Naim pace, timing, and musical drive in a compact, upgradeable format.
• Musical Performance – This pairing is known for rhythmic coherence, strong dynamic contrast, and excellent midband clarity, making it an engaging match for efficient loudspeakers and listeners who value musical flow over hi-fi effects.
• System Synergy – The Naim Audio NAC122X Preamplifier and NAP150X Power Amplifier benefits from Naim’s modular power supply philosophy, allowing meaningful performance upgrades through external PSU options such as the FlatCap or HiCap.
• Specifications – The power amplifier delivers approximately 50 watts per channel into 8 ohms, with high current capability and stable operation into 4 ohms, optimized for real-world loudspeaker control rather than headline power figures.
• Dimensions – Each unit measures approximately 432 mm (W) × 87 mm (H) × 314 mm (D), sharing Naim’s compact full-width chassis design for easy rack integration and consistent system aesthetics.
• Weight – The preamplifier weighs around 6 kg, while the power amplifier weighs approximately 10 kg, reflecting Naim’s emphasis on robust power supplies and mechanically grounded construction.
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Audible Illusions Modulus 3
• Overview – The Audible Illusions Modulus 3, released in 1993, is a tube preamplifier featuring all-valve signal stages and optional phono section, delivering classic analogue warmth, transparency, and exceptional musicality.
• Tube Circuit Design – Utilizing high-quality vacuum tubes in a minimalist circuit, the Audible Illusions Modulus 3 achieves low noise, rich harmonic texture, and outstanding midrange realism prized by vinyl enthusiasts.
• Phono Performance – The Audible Illusions Modulus 3 is especially renowned for its high-performance MM phono stage, offering excellent gain, low noise, and dynamic headroom for revealing analogue front-end systems.
• Specifications – Tube preamplifier topology, multiple line-level inputs, optional MM phono stage, frequency response approximately 20Hz–20kHz, low distortion, high gain structure, and external power supply for improved noise isolation.
• Dimensions – Approximate chassis size is 483 mm (W) × 140 mm (H) × 305 mm (D), with a separate external power supply designed to reduce interference and improve overall system performance.
• Weight – Combined unit and power supply weigh approximately 8–10 kg, reflecting solid construction, tube circuitry, and dedicated power regulation for stable operation.
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Wadia A102
• Wadia A102 Power Amplifier – The Wadia A102, released around 2014, is a solid-state Class D amplifier delivering exceptional control, speed, and resolution with Wadia’s signature digital precision and refined musical presentation.
• High-Efficiency Architecture – Using advanced Class D modules with Wadia’s optimized output filtering, the A102 provides wide bandwidth, low distortion, and excellent transient accuracy suitable for both high-end monitors and full-range speakers.
• Dynamic Authority – The A102 offers 150W per channel into 8Ω, doubling into 4Ω, ensuring impressive current delivery, stable operation with difficult loads, and spacious, articulate sound across complex musical passages.
• System Integration – With fully balanced inputs, precise gain structure, and compact yet robust construction, the Wadia A102 integrates seamlessly into modern digital or analog systems seeking clean, powerful amplification.
• Dimensions – Approx. 200 mm (W) × 90 mm (H) × 430 mm (D). Compact footprint fits easily into racks or shelves without compromising thermal performance.
• Weight – Around 6.5 kg. Lightweight but rigid aluminum chassis improves resonance control while aiding efficient heat dissipation typical of modern Class D amplifiers.
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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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McCormack DNA-125 Power Amplifier
• Overview – The McCormack DNA-125 Power Amplifier, released in 2001, is a solid state Class AB stereo power amplifier delivering high-current performance, minimalist circuit design, and exceptional musical transparency.
• Circuit Philosophy – Designed by Steve McCormack, the amplifier uses a direct-coupled, no-capacitor signal path, allowing the McCormack DNA-125 Power Amplifier to achieve fast transient response and low distortion.
• Sonic Performance – Known for its smooth yet dynamic presentation, the McCormack DNA-125 Power Amplifier delivers tight bass control, open midrange clarity, and extended highs without harshness or fatigue.
• Specifications – 125W per channel into 8 ohms, 185W into 4 ohms, Class AB topology, high-current output stage, wide bandwidth design, low feedback circuit, high damping factor for speaker control.
• Dimensions – Approximately 432 mm (W) × 140 mm (H) × 350 mm (D), featuring a robust full-width chassis designed for stability, heat dissipation, and integration into standard hi-fi racks.
• Weight – Approximately 12–14 kg, reflecting solid transformer design, high-quality components, and durable construction for reliable long-term performance.
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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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Musical Fidelity A1 Integrated Amplifier
• Integrated Amplifier Overview – The Musical Fidelity A1 Integrated Amplifier is a pure Class A design delivering smooth, warm, harmonically rich sound with exceptional midrange liquidity, offering a classic musical presentation ideal for refined, intimate listening environments.
• Pure Class A Operation – Operating fully in Class A with high biasing, it provides low crossover distortion, natural harmonic texture and excellent vocal realism, with one mention of Musical Fidelity A1 Integrated Amplifier reinforcing its signature performance.
• Minimalist Circuit Design – Featuring short signal paths, discrete components and low feedback architecture, the amplifier offers superb coherence, wide imaging and fluid musical timing, plus one additional mention of Musical Fidelity A1 Integrated Amplifier.
• Speaker & System Matching – Optimised for high-efficiency or easy-load speakers, the amplifier excels in smaller rooms or nearfield setups, delivering an immersive, relaxed presentation with impressive micro-detail and tonal balance.
• Product Dimensions – Measuring approximately 440 mm (W) × 100 mm (H) × 300 mm (D), the compact, low-profile chassis fits easily into classic or modern audiophile rack systems.
• Product Weight – Weighing around 7–8 kg, the steel body and wide heat-dissipation surface maintain stable Class A thermal performance, ensuring reliability and consistent sonic quality during extended listening sessions.
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Cayin A-88TMK2
• Cayin A-88T MK2 Integrated Amplifier Overview – The Cayin A-88T MK2, introduced in the mid-2010s, is a Class AB tube integrated amplifier featuring EL34/KT88 compatibility and high-quality phono input options for vinyl enthusiasts.
• Versatile Tube Power Architecture – Designed to run either EL34 for sweeter midrange or KT88 for stronger dynamics, the A-88T MK2 offers flexible voicing to match various loudspeakers and listening preferences.
• High-Grade Output Transformers – The amplifier uses wide-bandwidth, handcrafted output transformers, ensuring improved transient control, low distortion, and a richly layered soundstage with excellent separation across complex musical passages.
• Premium Phono and Line-Stage Performance – With a robust tube line stage and quiet phono circuit, the Cayin A-88T MK2 excels in delivering natural tone, dynamic expression, and engaging musical flow from both digital and analog sources.
• Dimensions – Approx. 420 mm (W) × 210 mm (H) × 360 mm (D), providing a stable footprint with ample space for heat dissipation crucial for tube amplifier operation.
• Weight – Around 23–25 kg, benefiting from heavy-duty transformers, a steel-reinforced chassis, and vibration-resistant construction for long-term performance stability.
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Linn Majik DS-i
• Integrated Streaming Amplifier – The Linn Majik DS-i is a Class D solid-state integrated amplifier with a built-in network streamer, delivering clean, efficient power and rich musical performance through Linn’s renowned DS streaming platform.
• Klimax-Inspired Digital Architecture – The Linn Majik DS-i incorporates advanced DAC circuitry and low-jitter clocking, offering detailed, pitch-accurate playback and excellent timing precision across high-resolution network-streamed music.
• Versatile System Connectivity – With Ethernet streaming, analogue inputs, and pre-outs, the Linn Majik DS-i integrates seamlessly with Linn systems and third-party components, providing flexible expansion and reliable everyday usability.
• Room-Optimised Performance – Compatible with Linn’s Space Optimisation, the Linn Majik DS-i adapts playback to your room’s acoustics, improving bass control, imaging, and overall musical coherence without requiring physical speaker changes.
• Dimensions – Approx. 381 mm (W) × 355 mm (D) × 80 mm (H). Compact chassis designed for discreet placement in modern hi-fi racks and living spaces.
• Weight – Approximately 4.5 kg, offering a lightweight yet rigid construction that supports low-noise operation and stable amplifier performance.
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Klyne 6L Preamplifier
• Overview – The Klyne 6L Preamplifier, released in the early 1990s, is a solid-state reference preamplifier featuring pure analogue circuitry and optional phono capability, designed for exceptional transparency and low-noise performance.
• Reference Analogue Design – Designed by Stan Klyne, the Klyne 6L Preamplifier utilizes a minimalist signal path and precision-selected components, delivering outstanding resolution, channel separation, and musical accuracy without artificial coloration.
• Audiophile Performance – The Klyne 6L Preamplifier is highly regarded for its neutral tonal balance, expansive soundstage, and exceptional microdynamic detail, making it an ideal partner for high-resolution source components and power amplifiers.
• Specifications – Fully discrete solid-state analogue design, multiple line-level inputs, optional MM/MC phono modules, frequency response approximately 5Hz–100kHz, ultra-low distortion, high signal-to-noise ratio, dual-mono architecture.
• Dimensions – Approximately 483 mm (W) × 95 mm (H) × 280 mm (D), featuring a low-profile chassis designed to minimize vibration and electromagnetic interference within high-end audio systems.
• Weight – Approximately 5–7 kg, reflecting premium internal components, extensive power regulation, and solid chassis construction for reliable long-term operation.
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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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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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Jeff Rowland Consonance Preamplifier
• Preamplifier Overview – The Jeff Rowland Consonance Preamplifier, introduced in the mid-1990s, is a reference solid-state line stage known for its ultra-low noise floor, holographic imaging, and refined tonal balance characteristic of Rowland’s early masterpieces.
• High-Resolution Line Stage – The Consonance employs fully balanced circuitry, premium discrete components, and short signal paths, ensuring exceptional transparency, natural harmonic structure, and impressive dynamic contrast with both solid-state and tube power amplifiers.
• Silent Power Architecture – Featuring Rowland’s renowned attention to power-supply regulation and isolation, the Jeff Rowland Consonance Preamplifier delivers extremely low distortion and stable channel performance, enhancing microdetail retrieval and spatial coherence.
• Precision Build Quality – Machined aluminum chassis, high-grade connectors, and vibration-resistant internal layout reinforce long-term stability, while providing the polished aesthetic and engineering elegance expected from Jeff Rowland designs.
• Dimensions – Approx. 430 mm (W) × 90 mm (H) × 300 mm (D). Designed for compatibility with standard rack systems while maintaining optimal internal airflow and cable management.
• Weight – Approx. 8–10 kg, depending on production revision, offering solid mechanical grounding that minimizes vibration and preserves low-noise signal integrity.
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Audio Research LS3B Preamplifier and D120 Stereo Amplifier
• System Overview – The Audio Research LS3B Preamplifier and D120 Stereo Amplifier, released in the early 1990s, form a solid-state Class AB pairing known for exceptional transparency, dynamic authority, and the classic Audio Research house sound with precise tonal balance.
• High-Resolution Line Stage – The LS3B uses a fully balanced, low-noise circuit with wide bandwidth and premium discrete components, delivering excellent detail retrieval, stable imaging, and superior channel separation for accurate two-channel reproduction.
• Powerful Class AB Amplification – The Audio Research D120 Stereo Amplifier provides 120W per channel of clean, controlled Class AB power with high-current capability, enabling confident drive of demanding loudspeakers while maintaining composure and refinement.
• Exceptional System Synergy – Together, the Audio Research LS3B Preamplifier and D120 Stereo Amplifier offer fast transients, low distortion, and highly coherent musical flow, making the combination ideal for revealing loudspeaker systems in dedicated listening rooms.
• Dimensions – LS3B: approx. 480 mm (W) × 130 mm (H) × 330 mm (D). D120: approx. 480 mm (W) × 180 mm (H) × 430 mm (D). Designed to fit standard Audio Research rack spacing.
• Weight – LS3B: approx. 7 kg. D120: approx. 27 kg. The amplifier’s heavy transformer and robust chassis provide excellent mechanical damping for stable long-term performance.
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Audio Research CL60
• Audio Research CL60 Overview – The Audio Research CL60, released in the early 1990s, is a Class AB push-pull tube power amplifier using 6550 output tubes, delivering the brand’s signature clarity, control, and musical refinement.
• Refined Tube Architecture – Employing four 6550 output tubes and 6FQ7/6922 driver stages, the CL60 offers excellent harmonic balance, open midrange presence, and extended treble, ideal for detailed yet natural high-end listening.
• Dynamic and Controlled Power – The Audio Research CL60 provides approximately 60W per channel with strong current delivery, enabling it to drive a wide range of speakers while maintaining superb transient speed and low noise performance.
• Classic ARC Build Quality – Featuring robust transformers, solid chassis construction, and meticulously designed circuitry, the CL60 exemplifies Audio Research reliability, long-term tube stability, and consistent high-fidelity performance.
• Dimensions – Approx. 480 mm (W) × 135 mm (H) × 430 mm (D), offering a substantial chassis size that accommodates generous power supply architecture and proper ventilation for tube operation.
• Weight – Around 22–24 kg, reflecting its heavy power transformer and durable steel frame, contributing to enhanced mechanical damping and stable sonic performance.
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Yamaha C-4 Preamplifier and M-4 Power Amplifier
• Overview – The Yamaha C-4 Preamplifier and M-4 Power Amplifier, released in 1979, combine a solid-state analogue preamplifier with a Class AB solid-state power amplifier, delivering vintage Japanese engineering and audiophile-grade performance.
• Reference Vintage Combination – Designed during Yamaha’s golden era, the Yamaha C-4 Preamplifier and M-4 Power Amplifier offer exceptional flexibility, precise signal control, and a highly musical presentation suitable for both vinyl and digital sources.
• Advanced Analogue Engineering – The Yamaha C-4 features extensive MM/MC phono adjustments, while the M-4 provides high-current amplification with Yamaha’s Auto Class A capability, delivering refined detail and excellent loudspeaker control.
• Specifications – M-4 rated at 120W per channel into 8 ohms and 170W into 4 ohms, Class AB with Auto Class A operation, frequency response 10Hz–100kHz, C-4 includes MM/MC phono stage, multiple impedance and capacitance settings.
• Dimensions – C-4 measures approximately 435 mm (W) × 72 mm (H) × 320 mm (D), while the M-4 measures approximately 435 mm (W) × 165 mm (H) × 385 mm (D).
• Weight – The C-4 weighs approximately 7.5 kg, while the M-4 weighs approximately 18 kg, reflecting robust construction, substantial transformers, and premium analogue circuitry.
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Audio Research VSI55 Tube Integrated Amplifier
• Overview – The Audio Research VSI55 Tube Integrated Amplifier, released in 2006, is a Class AB tube integrated amplifier using KT88 output tubes, featuring a pure analogue signal path without DAC or phono stage.
• Tube Amplification Character – Delivering classic Audio Research sonics, the Audio Research VSI55 Tube Integrated Amplifier offers open midrange, harmonic richness, and refined treble with excellent musical flow and natural tonal balance.
• Build & Circuit Design – The Audio Research VSI55 Tube Integrated Amplifier employs a fully discrete valve circuit with high-quality transformers, ensuring stable operation, low distortion, and consistent performance across various loudspeaker loads.
• Specifications – 50W per channel into 8 ohms, Class AB push-pull tube design, KT88 output tubes, frequency response 10Hz–40kHz, input impedance 300k ohms, multiple line-level inputs, no internal DAC or phono stage.
• Dimensions – Approximately 483 mm (W) × 178 mm (H) × 381 mm (D), with an open-top chassis design allowing proper heat dissipation and easy tube access.
• Weight – Approximately 22 kg, reflecting heavy-duty output transformers, solid chassis construction, and robust power supply required for stable tube amplifier operation.
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