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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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Roksan Blak Integrated Amplifier
• Overview – The Roksan Blak Integrated Amplifier, released in 2016, is a powerful Class AB solid-state design featuring an onboard high-performance DAC, delivering dynamic, controlled, and musically engaging playback for modern high-resolution systems.
• High-Current Amplification – The Roksan Blak Integrated Amplifier offers wide bandwidth and strong current delivery, ensuring excellent grip, transient precision, and rhythmic drive with demanding loudspeakers while maintaining smooth tonal balance.
• Versatile Digital Capability – With USB-B, optical, and coaxial digital inputs, the Roksan Blak supports high-resolution PCM playback, enabling system simplification by serving as both amplifier and DAC in one refined chassis.
• Premium Analog Performance – A robust linear power supply, refined preamp stage, and short signal paths provide excellent low noise, transparency, and imaging, ensuring the Roksan Blak Integrated Amplifier performs consistently across varied musical genres.
• Dimensions – Approx. 432 mm (W) × 80 mm (H) × 330 mm (D), offering a substantial but manageable footprint suitable for standard hi-fi racks or shelves.
• Weight – Approx. 14 kg, providing solid mechanical stability that reduces resonance and supports the amplifier’s high-current power architecture.
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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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Unison Research Tube CD Player
• Unison Research Tube CD Player – This refined tube-output CD player blends Italian craftsmanship with vacuum-tube musicality, producing a warm, fluid, and harmonically rich presentation that appeals to serious analogue-leaning digital listeners.
• Tube-Enhanced Output Stage – Featuring high-quality triode tubes in the analogue stage, the player delivers natural timbre, smooth textures, and expressive dynamics that elevate standard CD playback into a more immersive experience.
• Precision Digital Architecture – Employs a robust transport mechanism and low-noise DAC implementation designed to minimise jitter, improving resolution, micro-detail, and overall transparency while maintaining the signature Unison tonal balance.
• System Synergy – Works beautifully with both tube and solid-state amplification, offering a spacious soundstage and excellent musical flow, making it ideal for refined 2-channel listening systems.
• Dimensions – Approx. 435 mm (W) × 95 mm (H) × 360 mm (D), fitting easily into standard racks while providing sufficient tube ventilation.
• Weight – Roughly 11–13 kg, reflecting its solid chassis, quality power supply, and robust transport assembly designed for long-term reliability.
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Roksan Caspian M Series-1 CD Player and Integrated Amplifier
• Roksan Caspian M Series-1 CD Player and Integrated Amplifier – The Roksan Caspian M Series-1 CD Player and Integrated Amplifier deliver refined Class AB amplification and precision digital playback, offering exceptional musical flow, timing accuracy and tonal coherence for advanced audiophile systems.
• Digital Architecture & Sonic Performance – Using the Burr-Brown PCM1730E DAC, low-jitter clocking and isolated analogue/digital power rails, the Roksan Caspian M Series-1 CD Player and Integrated Amplifier provide stable imaging, low distortion and natural harmonic structure.
• System Connectivity & Integration – Designed for flexibility, the Roksan Caspian M Series-1 CD Player and Integrated Amplifier offer RCA and XLR outputs, multiple line inputs and digital outputs, ensuring clean signal paths and seamless integration into sophisticated stereo systems.
• Operational Design & Listening Character – With robust linear power supplies and a dual-mono amplifier layout, the Roksan Caspian M Series-1 CD Player and Integrated Amplifier deliver controlled dynamics, articulate bass and an engaging midrange ideal for revealing loudspeakers.
• Product Dimensions – CD Player: 432 mm (W) × 80 mm (H) × 330 mm (D). Integrated Amplifier: 415 mm (W) × 89 mm (H) × 330 mm (D). Sized for standard racks with stable thermal behaviour and mechanical rigidity.
• Weight – CD Player approx. 10 kg; Integrated Amplifier approx. 14 kg. The dense chassis and transformer design improve vibration control, enhancing clarity, bass articulation and overall system transparency.
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VTL Deluxe Stereo 120/50 Power Amplifier and VTL Maximal Preamplifier
• Tube Amplifier System Overview – The VTL Deluxe Stereo 120/50 Power Amplifier and VTL Maximal Preamplifier deliver classic vacuum-tube musicality with rich harmonic texture, wide dynamic expression and natural imaging for serious high-end analogue systems.
• Power Amplifier Performance – Using a Class AB push-pull circuit with EL34 or 6550 valves, the VTL Deluxe Stereo 120/50 Power Amplifier and VTL Maximal Preamplifier provide approximately 50–60W per channel, offering smooth mids, airy highs and excellent dimensionality.
• Preamplifier Transparency & Gain Structure – Featuring high-voltage tube gain stages and a minimalist signal path, the VTL Deluxe Stereo 120/50 Power Amplifier and VTL Maximal Preamplifier achieve low noise, superior tonal purity and engaging musical flow across vinyl and digital sources.
• System Synergy & Listening Behaviour – Designed to work together, the VTL Deluxe Stereo 120/50 Power Amplifier and VTL Maximal Preamplifier deliver coherent timing, fluid transient behaviour and a large holographic soundstage ideal for efficient or well-matched loudspeakers.
• Product Dimensions – Amplifier: approx. 483 mm (W) × 203 mm (H) × 381 mm (D). Preamplifier: approx. 432 mm (W) × 89 mm (H) × 330 mm (D), sized for stable rack integration.
• Product Weight – Amplifier weighs roughly 22–25 kg; preamplifier approx. 7–10 kg. Heavy transformers and rigid chassis designs provide superior mechanical damping and improved tube performance stability.
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Roksan Oxygene CD Player with Integrated Amplifier
• Roksan Oxygene CD Player with Integrated Amplifier – A finely engineered British system combining a 24-bit/192kHz CD player and Class D amplifier to deliver precise dynamics and musical clarity for discerning audiophiles.
• Class D Amplification Excellence – The amplifier section uses Hypex UcD modules and a linear power supply, offering approx. 90 W into 8 Ω and up to 150 W into 4 Ω, suitable for advanced speaker loads.
• Digital-to-Analog & Source Flexibility – The CD player supports 24-bit/192 kHz conversion, optical/coax outputs and RCA analogue output, while the integrated amp offers aptX Bluetooth, subwoofer output and multiple line inputs.
• Compact Stylish Design – Each unit measures approximately 310 × 310 × 60 mm (W×D×H), allowing sleek placement in premium systems without sacrificing build quality or performance.
• Balanced Build Weight – The CD player weighs around 4 kg and the integrated amplifier around 7 kg, delivering mechanical stability with minimal rack footprint in high-end systems.
• Upgrade-Friendly Architecture – Its modular design and high-quality digital stage make the Roksan Oxygene CD Player with Integrated Amplifier an ideal foundation for system growth or position as a reference all-in-one solution.
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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.