RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
This US$96 asking price is a genuine bargain, landing well below the 25th percentile of US$125 and significantly under the median of US$140 for this amplifier in the used market. The listing notes an unknown condition, which typically depresses value, yet the price is so low that it still represents a strong upside opportunity for a buyer willing to inspect or refurbish. Even accounting for the condition uncertainty, you are paying roughly 30% less than the typical floor for comparable listings.
The Audio Source 5.3a Monoblock is well-regarded for delivering 250W RMS of clean power in a compact chassis, making it a versatile choice for driving demanding speakers or bridging into high-end systems. Its 250W rating offers meaningful headroom for dynamic peaks, a trait enthusiasts prize in monoblock designs. At this price, the potential to secure a high-power, well-loved amplifier for under US$100 is a clear buying opportunity, with the only caveat being the need to verify the unknown condition before committing.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
3A is a French loudspeaker brand with roots going back to the 1960s, when founder Daniel Dehay established the company under the name 3A, short for “Applied Acoustic Art.” The “Reference” name came later, and the brand is now associated with Reference 3A, reflecting its long, specialist lineage in two-channel audio rather than a broad consumer electronics history.
The company is known primarily for loudspeakers, especially compact and floorstanding hi-fi designs such as the MM de Capo and Taksim. Its catalogue has focused on carefully voiced passive speakers rather than electronics categories like amplifiers, DACs, turntables, or headphones. The emphasis is on high-sensitivity, easy-to-drive speakers built for musical coherence and low-power amplification.
In the market, 3A sits in the niche audiophile and specialist high-end segment rather than the mass market. Its reputation is strongest among experienced hi-fi buyers who value French heritage, distinctive engineering, and a refined, natural presentation. It is not a broad lifestyle brand; it is better understood as a long-running boutique loudspeaker maker with a collector-friendly backstory and a loyal following.
See all 3A listings on RADAR.
eBay UK
GB
eBay US
eBay US
eBay UK
audio-markt.de
Good
DE
StereoNET
AU
