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Purifi PTT6.5W08-NFA-01 for Elsinore Speaker Project Woofer Eight (8) super duper Purifi PTT6.5W08-NFA-01 woofers as necessary for the Elsinore ULD loudspeaker project. Elsinores are a great speaker for amplifiers of any output impedance (read valve amplifers) and are extremely easy to drive. It is an Australian project based in Sydney by Joe Rasmussen. My intention was to build these and power them using my SET amplifier but I now cannot see myself getting to the project. Drivers are brand new, still in their boxes and presented 10% below retail (30% below the cost of getting them to Au
The timing matters less than the fact that this is a specialist, current-generation Purifi driver, and at A$3,900 it’s above your recent local used-market anchor of a A$1,716 median, A$1,533 25th percentile, and A$2,171 75th percentile, so this reads as ambitious rather than fairly priced.
That said, Purifi’s reputation is strong for low distortion, clean bass, and serious DIY/active-speaker performance, and these drivers are bought for their engineering more than for nostalgia. If it’s genuinely new-old-stock, with original packaging and no handling marks, the upside is getting a hard-to-source premium unit in clean condition; just make sure the exact variant and intended project compatibility are confirmed before paying that kind of premium.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Purifi Audio emerged from Denmark around 2017 as a research-driven venture founded by audio engineering luminaries Lars Risbo and Bruno Putzeys. Both pioneers in class D amplification—Risbo with his PCM-PWM innovations via Toccata Technology and Putzeys with his storied career—teamed up to push boundaries in distortion reduction. Rooted in the science-centric ethos of the Technical University of Denmark, the company formalized through subsidiaries like Purifi Transducer Technology, emphasizing fundamental R&D over consumer products.
The brand specializes in high-performance components rather than complete systems, focusing on advanced loudspeaker drivers and class D amplifier modules. Their Eigentakt control scheme powers modules like the 400W unit, achieving THD and IMD below -115dB across frequencies. These transducer and amp technologies target measurable excellence in linearity and efficiency, serving OEMs and DIY enthusiasts who integrate them into custom high-end builds.
Purifi occupies a niche boutique position in the high-end hi-fi market, revered by knowledgeable buyers for its uncompromising engineering and objective performance metrics. As a young Danish startup, it earns acclaim for revolutionizing driver and amplification tech, though it remains under the radar outside specialist circles, prioritizing innovation over mass-market presence.
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