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Cary Audio CAD-805RS Amplifier
About the CAD-805RS Amplifier
Considered by The Absolute Sound as one of the ten most important amplifier designs of all time, the CAD-805 continues its legacy with the Reference Series CAD-805RS, epitomizing SET mono-block amplifiers’ excellence. Its circuit and parts upgrades ensure it remains at the benchmark for SET audio performance. SET amplifiers, characterized by their pure Class-A operation, distinguish themselves from other amplifiers, showcasing a harmonic richness that sets them apart. Please note that all SET amplifiers are pure Class-A, but not all Class-A amplifiers are SET.
SET enthusiasts praise the CAD-805RS for its holographic soundstage, harmonic richness, and lush midrange, delivering an immersive listening experience across music genres such as jazz, vocal, and classical. With the flexibility to choose between the included 845 and 211 output tubes, you can tailor your sound preference to either a rich, lush sound or a more linear, powerful profile. Experience the magic of music like never before with the CAD-805RS—where every note resonates with unmatched clarity and depth.
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Warm, engaging Class A sound
Cary Audio’s CAD-805RS monoblock amplifier delivers a warm, highly engaging tube presentation anchored by a muscular low end and refined midrange presence. As a Single-Ended Pure Class A 50 W design, it trades brute authority for harmonic richness and continuous Class A warmth, offering deep, controlled bass, lush mids and a spacious, stable soundstage that rewards long listening sessions. The CAD-805RS’s substantial transformers, large capacitor bank and meticulous US-made construction give it rock-solid control and top-tier build quality, while the Jaguar ‘Anthracite Black’ chassis underscores the boutique aesthetic. Ideal for audiophiles with medium-sensitivity loudspeakers and vinyl lovers who prioritize musical involvement over maximum power, the amp represents a compelling value in the tube-monoblock category. Audiophilepure praised its musical engagement and pointed to the quality of parts and labor as evidence of value.
Pros
- Highly engaging, musical presentation with deep yet controlled bass that enhances listening enjoyment.
- Robust US-made construction using premium transformers and components, reflecting meticulous build quality.
- Strong value within the boutique tube-monoblock segment—parts and labor suggest the pair punches above its retail justification.
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Cons
- Low-frequency response is somewhat generous, which may be too warm or heavy for listeners who prefer a leaner bass presentation.
Sound Quality
88/100
Dynamics
88/100
As a Single-Ended Pure Class A 50 W design the amp is in the medium-power Class A band; reviewers describe an engaging presentation with a generous, controlled deep-bass response. The CAD-805RS's large power transformers and substantial capacitor bank (4 × 1500 µF @ 450V) support strong, consistent current delivery for a 50 W Class A topology. No reviewer reported loss of control or clipping; performance aligns with 'excellent' dynamics for a 50 W pure Class A monoblock rather than outright reference-class authority.
Soundstage Imaging
88/100
The published review emphasizes engagement and musical flow rather than technical staging metrics, but the reviewer’s strong enjoyment and sense of musical presence imply stable imaging and a convincing soundstage for a tube monoblock. Given the mono configuration and quality transformers, the amp is likely to deliver solid channel separation and a layered presentation consistent with high-end tube monos.
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Build Quality
90/100
Reviewer explicitly praised 'the quality of parts and the apparent amount of labor' and the spec sheet shows substantial engineering: heavy 85 lb chassis, large power transformer(s), special air-gap output transformer, and large capacitor banks. The monoblock implementation, US-made construction and premium transformers/caps indicate robust thermal and power-supply engineering consistent with top-tier boutique tube amps.
Value for Money
91/100
Reviewer calls the US-made CAD-805RS 'offers good value' and is surprised the pair retails at $15,995/pair (~$7,998 per monoblock) given the visible parts and transformers. For a 50 W pure Class A tube monoblock with substantial transformers and premium components, that pricing is competitive within the boutique tube-monoblock market; reviewers imply the amp punches above what its parts-cost suggests, making the price justifiable compared with peers in this segment.
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