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Plinius SA103 Power Amplifier A fabulous famous high-end Class -A New Zealand Power Amplifier that sounds incredible and has the punch and power to boot and has run every speaker I’ve tested it with even the very hard to drive speakers.Great condition and no damage or marks etc I could see, some of the font is rubbed off around the mute button (see photos)Its in perfect working order and hand built by Plinius to last for many many years to come.It is its highly biased in Class-A more than any other amp I’ve had so it does get hot in Class-A mode! Not an amp to leave boxed in a rack etc, it nee
This looks like a deal: at A$3,799, it sits below the A$4,079 25th percentile and well under the A$4,378 median of the recent comparable AUD listings, so it’s priced at a clear discount rather than merely “okay.” Against that spread, it reads as a strong-buy candidate if the unit is functioning properly and has been sensibly used.
That makes sense because this is a respected old-school power amp with real grip, scale, and refinement; good examples are prized for driving difficult speakers with composure and for delivering a big, controlled sound that still feels musical. If the photos and seller notes show clean cosmetics, stable operation, and any original packaging or accessories, the upside is solid; at this price, I’d only pause for obvious service history gaps or signs of abuse.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Plinius Audio: New Zealand's Amplifier Specialist
Plinius Audio Systems was established in 1980 by Peter Thomson, a mechanical engineer based in New Zealand who developed a passion for high-fidelity amplifier design. The company gained rapid recognition within its home market and solidified its position through a 1987 merger with Craft Audio Limited, bringing designer Gary Morrison into the fold. This partnership proved pivotal, establishing Audible Technologies Limited as the production entity and introducing the asymmetrical circuit design philosophy that would define the brand's engineering approach. Today, Plinius remains headquartered in Christchurch, New Zealand, where all design, manufacturing, and marketing operations are conducted in-house.
Plinius has built its reputation almost exclusively around power amplifiers and preamplifiers, with particular acclaim for their Class A designs. The company's product lineage spans from early dual-mono configurations in the 1980s through sophisticated monoblock amplifiers and refined preamp stages. Their engineering ethos emphasizes meticulous hand-assembly and attention to sonic detail, with each unit individually built by dedicated craftspeople. This focused product strategy—rather than diversifying into speakers, digital sources, or accessories—reflects the brand's deep specialization in amplification.
Positioned as a high-end, boutique manufacturer, Plinius commands respect among serious audiophiles despite limited mainstream visibility outside New Zealand and select international markets. The brand is recognized for producing powerful, sophisticated amplifiers that prioritize sonic purity and engineering integrity over mass-market appeal. While once more prominent in enthusiast circles, Plinius maintains its standing as a niche, quality-focused producer valued by discerning listeners who prioritize amplifier excellence and New Zealand craftsmanship.
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