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The US$600 asking price for this used iBasso PB5 is a genuine bargain, sitting well below the typical used market range of US$1,100 to US$1,300 for this discontinued high-end portable tube amplifier. At roughly 40% of its original US$1,499 retail cost, this listing represents a strong deal for a unit that retains its premium components and engineering.
This PB5 Osprey is highly regarded for its dual 6th-generation Korg NuTube 6P1 vacuum tubes, which deliver a warm, rich, and vivid sound signature that mimics traditional triodes. Its 1.7W@32Ω output, 24-position stepped attenuator, and balanced-input-only design make it a powerhouse capable of driving demanding headphones like the Susvara. With no noted failure points or missing accessories in this clean listing, it is an excellent buying opportunity for an enthusiast seeking top-tier tube sound at a fraction of the original price.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Founded in 2006 in China, iBasso Audio emerged as a dedicated force in portable hi-fi, prioritizing research and development to deliver high-quality mobile music solutions. From its early days, the brand focused on empowering audiophiles with gear that elevates on-the-go listening, quickly gaining traction through innovative products like the groundbreaking Android-based DX100 digital audio player.
iBasso specializes in portable audio categories, including headphone amplifiers, DACs such as the DC-Elite and DC04Ultra, digital audio players like the DX270 and DX320MAX, in-ear monitors, full-sized headphones, and high-end cables. Their lineup also features modular amp systems and accessories like the PB6 portable battery, all engineered for seamless integration and superior sound reproduction in compact form factors.
Positioned as a mid-to-high-end contender in the global hi-fi market, iBasso commands respect among enthusiasts for its build quality, technological advancements, and reliable warranty support. Exported to over 30 countries, it stands as one of China's largest producers of DAPs and IEMs, blending accessibility with performance that rivals premium competitors and appeals to discerning portable audio buyers.
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