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Classe CP50 Preamp and CA150 Power Amplifier
• Reference Heritage – Classe CP50 Preamp and CA150 Power Amplifier, released in the late 1990s, combine solid state Class A/AB design with refined Canadian engineering, delivering authoritative control, tonal neutrality, and long-term musical satisfaction.
• Preamplifier Performance – The CP50 preamplifier is renowned for its low-noise architecture, discrete circuitry, and transparent gain stages, offering excellent channel separation and a natural, unforced presentation across analog sources.
• Power Amplifier Authority – The CA150 stereo power amplifier provides high-current solid state Class AB operation, maintaining composure into difficult speaker loads while preserving midrange clarity, dynamic headroom, and tight, controlled bass response.
• Specifications – Power output is rated at approximately 150 watts per channel into 8 ohms, doubling into 4 ohms, with wide bandwidth, high damping factor, and stable operation into demanding loudspeakers.
• Dimensions – Classe CP50 Preamp and CA150 Power Amplifier. CP50 measures approximately 483 mm (W) × 76 mm (H) × 330 mm (D), while CA150 measures roughly 483 mm (W) × 178 mm (H) × 406 mm (D), suitable for standard hi-fi racks.
• Weight – CP50 weighs about 8 kg, while the CA150 weighs approximately 29 kg, reflecting substantial power supply design, heavy transformers, and rigid chassis construction for vibration control and thermal stability.
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YBA Integre Alpha Integrated Amplifier
• YBA Integre Alpha Integrated Amplifier Overview – The YBA Integre Alpha Integrated Amplifier, launched in the mid-1990s, is a Class AB solid-state design featuring high-quality analog inputs and YBA’s signature minimal-feedback topology for purity and musical realism.
• Refined French Engineering – The YBA Integre Alpha delivers exceptional tonal accuracy, wide soundstage depth, and a smooth, grain-free presentation, making it ideal for resolving speakers that benefit from organic musical flow and control.
• Musical Drive and Dynamics – With its robust power supply and precisely voiced circuitry, the YBA Integre Alpha offers fast transient response, excellent micro-detail retrieval, and stable current delivery for rhythmic, engaging playback.
• Low-Noise Analog Performance – The YBA Integre Alpha emphasizes ultra-low distortion and clean power delivery, ensuring black backgrounds, natural harmonic structure, and impressive dynamic contrast across both digital and analog sources.
• Dimensions – Approx. 430 mm (W) × 85 mm (H) × 300 mm (D), fitting easily into standard hi-fi racks while maintaining optimal ventilation for stable long-term performance.
• Weight – Roughly 10–12 kg, featuring a high-grade transformer and rigid chassis that help suppress vibration and enhance signal purity.
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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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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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Pass Labs X150.8 Power Amplifier
• Power Amplifier Overview – The Pass Labs X150.8 Power Amplifier is a Class A/AB design delivering 150W into 8Ω with high-current capability, offering exceptional purity, wide bandwidth and authoritative control for demanding loudspeakers.
• Circuit Topology & Sonics – Using Pass Labs’ patented Super-Symmetric (SuSy) topology, the amplifier achieves ultra-low distortion, deep harmonic richness and excellent transient integrity, with one mention of Pass Labs X150.8 Power Amplifier reinforcing precision.
• High-Current Output Stage – Its massive output devices and oversized transformer ensure effortless drive, stable operation into low impedances and expansive dynamic expression, plus one additional mention of Pass Labs X150.8 Power Amplifier.
• Thermal Stability & Build – The heavy aluminium heat sinks and robust chassis maintain optimal operating temperature, reduce noise and ensure long-term reliability, supporting clean, consistent performance at all listening levels.
• Product Dimensions – Approx. 483 mm (W) × 190 mm (H) × 540 mm (D), requiring a deep, well-ventilated rack shelf to support its scale and thermal requirements.
• Product Weight – Weighing roughly 45 kg, the amplifier’s substantial transformer, dense heat sinks and rigid chassis enhance grounding, resonance control and overall sonic stability.
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Pass Labs XS Phono with Power Supply
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Pass Labs XS Phono with Power Supply – This flagship dual-chassis phono preamplifier from Pass Laboratories raises the vinyl benchmark, enabling ultra-low-noise amplification of MC/MM cartridges with absolute authority and tonal purity.
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Reference-Grade Audio Architecture – Featuring selectable gain settings (56, 66, 76 dB), RIAA accuracy ±0.1 dB from 20 Hz to 20 kHz, and a purpose-built power supply dedicated to quiet signal handling.
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System Integration & Specification – Dual-chassis design: each unit measures approximately 19″ W × 14″ D × 6.25″ H (483 × 356 × 159 mm) and consumes around 55 W of power—ideal for serious turn-table setups.
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Build Quality & Weight Profile – Weighing roughly 80 lbs (≈ 36 kg total), the unit’s heavy, stable construction minimizes mechanical and electrical interference for fine-detail retrieval and low-level resolution.
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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.





