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• Overview – The Aragon 4004 Power Amplifier is a dual-mono solid-state stereo amplifier designed by Dan D’Agostino under Mondial Designs, first introduced in 1987 and nicknamed the “poor man’s Krell” for its bass authority.
• Key Technology – A quad array transistor package in the pre-driver stage yields matched transistors with equal temperature coefficients, while dual nitrogen-annealed toroidal transformers and a distinctive “V”-notch chassis handle power delivery and convection cooling.
• Performance – Unusually for its era, output doubles from 200W into 8Ω to 400W into 4Ω, giving the amplifier a reputation for controlled, extended bass and the current reserves to drive demanding electrostatic and ribbon speakers.
• Specs – The Aragon 4004 Power Amplifier delivers 200W per channel into 8Ω, doubling to 400W per channel into 4Ω. Frequency response: 20Hz–20kHz. THD: 0.05% (8Ω loads). Signal-to-noise ratio: 110dB, A-weighted. Input sensitivity: 150mV for 1W output. Input impedance: 22kΩ. Power consumption: 1500W maximum. Minimum speaker load impedance: 4Ω.
• Dimensions – Measures approximately 483mm (W) × 165mm (H) × 368mm (D) (19 × 6.5 × 14.5 inches). Its top panel features a distinctive “V”-notch heatsink design allowing convection cooling even with a shelf or component placed on top.
• Weight – Weighs approximately 29.5kg (65lbs), reflecting its dual toroidal power transformers and true dual-mono construction with two separate mono amplifiers housed in a single chassis.
At S$1,500, this sits above the S$1,051 median and a touch below the S$1,528 75th percentile for recent SGD comps, so it reads as fair to slightly ambitious, not a steal. For a serious mono power amp, that’s still within the normal market band if the unit is clean and functioning properly.
The appeal here is the Aragon’s reputation for big current delivery, control, and a muscular, no-nonsense presentation that suits difficult speakers well. If the listing is genuinely well kept, with solid cosmetics and confirmed stable operation, the upside is buying a respected heavyweight with enduring enthusiast appeal rather than a flashy, disposable amp.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Aragon emerged in the mid-1980s as a bold American audio brand under Mondial Designs, with its inaugural 4004 amplifier launching in 1987 and the iconic 8008 following soon after, forever altering high-fidelity sound reproduction through innovative engineering like the signature V-notch heatsink. Founded with a no-compromise ethos by leaders including Tony Federici, it prioritized pure sonic performance over gimmicks, setting industry trends rather than chasing them. Acquired by Klipsch around 2001-2006 and later shuttered, the brand was revived in 2009 by U.S.-based Indy Audio Labs, which relaunched it in 2013 with modern updates while honoring its heritage.
The brand focuses squarely on high-performance power amplifiers, exemplified by the 200Wpc dual-mono 8008 and premium Iridium monoblocks, alongside sophisticated processors like the Soundstage preamp capable of audiophile-grade decoding for Dolby Digital, DTS, and beyond. All products are designed and handcrafted in the USA, emphasizing fully decoupled power supplies, IC-free signal paths, and robust machined aluminum construction for superior thermal management and durability.
Aragon holds a revered position in the high-end market as a vintage-inspired powerhouse for discerning audiophiles, blending timeless reliability with contemporary software-upgradable features like Ethernet control. Its reputation for unadorned excellence—beautiful, powerful, and easy to operate—earns consistent praise from outlets like The Absolute Sound and Stereophile, appealing to buyers seeking reference-level amplification without excess.
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