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Very good condition. Works perfectly but the on off LED light is not illuminating when on.
£300 is a fair-to-good asking price for a Meridian 556 in good condition; these were a serious 100W-per-channel dual-mono power amp, and used examples typically trade in the mid-hundreds rather than at bargain-basement money. If the cosmetics are clean and it’s working properly, this is comfortably in the buyable zone rather than an ambitious ask.
What makes it worthwhile is the combination of proper current delivery and a mature, refined Meridian sound: it’s built to handle demanding loudspeakers, with full protection, bi-wire outputs, and a hefty toroidal supply. For a well-kept unit, the upside is a lot of amplifier for the money, especially if it comes from an attentive owner with the original box, manual, or service history.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Meridian Audio, founded in 1977 in Cambridgeshire, England, by industrial designer Allen Boothroyd and engineer Bob Stuart, emerged as a trailblazer in high-end audio. From its inception as Boothroyd Stuart, the company quickly distinguished itself through relentless innovation, pioneering digital signal processing (DSP) and becoming the first to deliver high-resolution digital active loudspeakers for domestic use, such as the groundbreaking M1 and D600 models.
The brand's product focus centers on premium home audio systems, including DSP loudspeakers with integrated amplification, active speakers, and high-resolution components engineered for superior sound fidelity. While rooted in hi-fi excellence, Meridian has masterfully expanded into bespoke automotive audio, crafting immersive systems for luxury marques like Land Rover, Jaguar, and McLaren, with signature 3D surround setups featuring up to 23 speakers tailored to vehicle acoustics.
Positioned firmly in the high-end market, Meridian commands respect among discerning audiophiles for its British-engineered precision, over 350 industry awards, and museum-worthy designs exhibited at the Victoria and Albert Museum and MoMA. It remains a benchmark for acoustic innovation, blending heritage craftsmanship with forward-thinking technology across home and automotive realms.
See all Meridian listings on RADAR.
