-
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.
For Prices Login -
Naim Audio NAC52 Preamplifier with NAP135 Monoblock
• Naim Audio NAC52 Preamplifier with NAP135 Monoblock Overview – The NAC52 (1991) paired with NAP135 monoblocks forms a reference solid-state Class AB system renowned for speed, control, and the authoritative musicality that defines classic Naim performance.
• Reference Preamplifier Precision – The NAC52 uses discrete Class A gain stages, fully isolated circuitry, and ultra-low-noise architecture to deliver exceptional timing accuracy, microdynamic detail, and natural tonal integrity.
• Monoblock Drive and Control – The Naim Audio NAC52 Preamplifier with NAP135 Monoblock combination provides 75W of high-current power per channel, ensuring superb loudspeaker grip, dynamic authority, and articulate bass performance.
• Legendary Naim Engineering – Featuring mechanically decoupled boards, robust toroidal supplies, and rigid aluminium casework, the NAC52/NAP135 system offers long-term stability and reliable high-resolution musical reproduction.
• Dimensions – NAC52: approx. 432 mm (W) × 76 mm (H) × 301 mm (D). NAP135 monoblocks: approx. 160 mm (W) × 160 mm (H) × 300 mm (D) each.
• Weight – NAC52 approx. 7 kg; each NAP135 approx. 12 kg, reflecting their heavy-duty transformers and solid mechanical isolation design.
For Prices Login -
Naim Audio NAC52 Preamplifier and SuperCap Power Supply
• Naim Audio NAC52 Preamplifier and SuperCap Power Supply Overview – The Naim Audio NAC52, introduced in 1991, is Naim’s reference solid-state preamplifier, paired with the SuperCap to deliver ultra-low-noise, high-current power for unparalleled musical transparency.
• Reference-Level Preamp Performance – Featuring discrete Class A gain stages, precision volume control, and fully separated signal paths, the NAC52 achieves exceptional clarity, timing accuracy, and microdynamic expressiveness across all sources.
• SuperCap Power Precision – The Naim Audio NAC52 Preamplifier and SuperCap Power Supply combination provides 13 regulated supplies, dramatically lowering noise and enhancing dynamics, soundstage depth, and tonal refinement.
• Naim Reference Engineering – Built with mechanical decoupling, rigid casework, and premium component selection, the NAC52 system maintains long-term reliability and consistently reveals the musical intent of every recording.
• Dimensions – NAC52: approx. 432 mm (W) × 76 mm (H) × 301 mm (D). SuperCap: approx. 432 mm (W) × 122 mm (H) × 374 mm (D), optimised for rack placement.
• Weight – NAC52 approx. 7 kg; SuperCap approx. 15–17 kg, reflecting its large transformer mass and robust regulated power architecture.
For Prices Login -
Audiolab 8000Q Preamplifier 8000P Power Amplifier
• Audiolab 8000Q Preamplifier 8000P Power Amplifier Overview – The Audiolab 8000Q and 8000P, released in the early 2000s, deliver clean, neutral, solid-state Class AB amplification with excellent transparency and stability for precise and controlled music reproduction.
• High-Resolution Preamp Performance – The 8000Q offers exceptionally low noise, stable gain structure, and accurate channel matching, ensuring the system maintains clarity and tonal balance with both digital and analogue sources.
• Dynamic and Controlled Power Delivery – The Audiolab 8000Q Preamplifier 8000P Power Amplifier pairing delivers around 100W per channel with strong current capability, ensuring confident handling of demanding loudspeakers with speed and authority.
• Reliable British Engineering – Known for durability and consistency, the 8000 series features robust power supplies, minimalist signal paths, and understated industrial design focused on long-term performance and sonic accuracy.
• Dimensions – Each unit measures approximately 445 mm (W) × 74 mm (H) × 335 mm (D), allowing easy rack placement while maintaining optimal internal layout for low noise and thermal control.
• Weight – The preamplifier weighs around 6 kg, and the power amplifier approx. 10 kg, reflecting solid build quality and well-regulated power architecture.
For Prices Login -
McIntosh C40 Preamplifier and MC2500 Amplifier
• System Overview – The McIntosh C40 Preamplifier and MC2500 Amplifier deliver a reference-grade combination known for immense power, ultra-low distortion, and exceptional musical authority, suited for both studio mastering and high-end home systems.
• C40 Preamplifier Capability – The C40 provides wide input flexibility, precision tone shaping, and McIntosh’s low-noise circuitry, ensuring a transparent, dynamically expressive signal path ideal for analog and digital front-end integration.
• MC2500 Power Delivery – With 500W per channel and Autoformer impedance matching, the MC2500 offers massive headroom, outstanding damping control, and effortless drive even for highly demanding full-range or low-efficiency loudspeakers.
• System Synergy – Together, the McIntosh C40 Preamplifier and MC2500 Amplifier produce a wide, stable soundstage with superb bass grip, rich harmonic texture, and the unmistakable “big Mac” presentation.
• Dimensions – C40: approx. 443 × 152 × 406 mm. MC2500: approx. 483 × 292 × 559 mm. Both components require substantial rack space due to their depth and transformer mass.
• Weight – C40 weighs around 13 kg, while the MC2500 is approximately 69 kg, supported by heavy transformers and robust heat-sinking for long-term stability and thermal control.
For Prices Login -
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.
For Prices LoginAdcom GFP-555 Preamp and GFA-5800 Power Amp
For Prices Login -
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.
For Prices Login -
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.
For Prices Login -
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.
For Prices Login -
Naim Audio NAC 102 Pre-Amplifier and NAP 180 Power Amplifier
-
Naim Audio NAC 102 Pre-Amplifier and NAP 180 Power Amplifier – A revered Olive-series combo delivering Naim’s signature pace, rhythm and timing, recognized by seasoned audiophiles for inherent musical drive and coherence.
-
Class AB Power Expertise – The NAP 180 offers approximately 60 W per channel into 8 Ω, and 90 W into 4 Ω, with a robust 500VA transformer and twenty thousand µF reservoir capacitors for dynamic solidity.
-
Discrete Analog Control Stage – The NAC 102 features fully discrete transistor gain stages, remote operation, and comprehensive input flexibility—including optional phono boards—for detailed system integration.
-
Matched System Synergy – Designed as a true pre-/power pair, these units maintain low signal latency and strong grounding to preserve integrity when driving Naim-compatible loads and cables.
-
Product Dimensions – Each unit measures approximately 207 × 87 × 314 mm, enabling compact shelf integration or rack placement without sacrificing performance.
-
Weight – NAC 102 is roughly 2.5 kg, NAP 180 around 10 kg, allowing stable placement and excellent mechanical grounding for improved sonic accuracy.
For Prices Login -
Solid state pre amplifiers are known for their precision, low noise floor, and consistent performance. Using transistor-based circuits, they deliver accurate signal control and neutral sound reproduction, making them suitable for a wide range of Hi-Fi systems. Solid state pre amplifiers often offer extensive connectivity and reliable long-term operation. Because of their durability, the pre-owned market provides a practical way to access higher-tier solid state designs at better value.
SoundTribeAsia is positioned as the go-to online marketplace for new and pre-owned solid state pre amplifiers in Singapore and Malaysia. Buyers can compare brands, features, and conditions in one trusted platform. With verified sellers and transparent listings, SoundTribeAsia supports confident system upgrades.