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March Audio P451 Mono Amplifiers Price Drop. A pair of March Audio P451 monoblock amplifiers offered for sale. Purchased new by me 3yrs ago. They present as new, in original packaging, USB stick with manual etc. Used only in a smoke free, child free home. Using Bruno Putziy’s class leading EIGENTAKTClass-D module. The amps are difficult to photograph without looking like the edges might have some marks but they do not. Excellent amplifiers but I have built another system (Linkwitz) using their proprietary boxes so these are now on the market. No problems driving speakers down to 2ohms. C
Is A$2,250 for a like-new March Audio P451 Mono a bargain, or just fair? Given that the P501 mono lists new at A$5,000 and sold used for A$2,700, and the P452 (a closely related 450W stereo model) is a top-tier solid-state powerhouse known for ultra-low distortion and massive current, this single mono at A$2,250 sits well below the typical used price for the P501 mono. Assuming the P451 mono is the 450W single-channel version of the P452, this asking price is a strong deal, likely below the 25th percentile of the used market for this class of March Audio amplifiers.
The P-series solid-state amps are beloved for their clinical precision, sky-high damping factor, and ability to drive difficult loads without strain. Buying a like-new P451 Mono at this price means you’re getting a high-wattage, low-noise, hand-built amplifier with minimal wear—essentially original-owner condition that usually commands more. With March’s reputation for robust build quality and optional extended warranties on newer units, this listing offers genuine upside for a fellow enthusiast seeking transparent, high-current performance without the tube maintenance headache.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
March Audio emerged in 2018 from the ingenuity of founder Alan March, an engineer with a lifelong passion for music and audio electronics. Hand-built in a facility near Gingin in Western Australia, the brand embodies a commitment to exceptional engineering and strict quality control, transforming personal enthusiasm into a focused pursuit of high-performance audio at accessible prices.
The company specializes in meticulously designed components, including Purifi-based amplifiers and speakers that prioritize technical precision and sonic excellence. Their lineup emphasizes amplification and loudspeaker solutions, crafted to deliver superb sound without the premiums often seen in boutique offerings.
March Audio occupies a niche as a boutique Australian innovator, earning praise among discerning audiophiles for outperforming expectations in value-driven hi-fi. Positioned in the mid-to-high tier market, it appeals to knowledgeable buyers seeking transparent, powerful performance over hype, with a growing reputation for reliability and musicality in enthusiast circles.
See all March Audio listings on RADAR.
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