RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
At US$60, this Fosi Audio P4 is a genuine bargain, sitting well below the 25th percentile of US$88 for typical used listings and far under the US$101 median. The current retail price hovers around US$99–US$109, so securing this unit at US$60 represents an immediate 40% discount off new value and a strong entry point for budget-conscious enthusiasts.
The P4 is a standout in the sub-US$100 category, offering pristine audio with a low noise floor, high signal-to-noise ratio (≥110dB), and extremely low distortion (≤0.003%). It delivers solid tone control with ±12dB gain, three RCA inputs, and a pre-out for active subs, making it a compact control hub for desktop or stereo setups. With no noted failure points at this price and a clean listing likely from original ownership, this is a timely buying opportunity for anyone seeking remote-controlled, well-featured preamp performance without the premium cost.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Fosi Audio emerged in January 2017 from a modest 10-square-meter office in Shenzhen, China, founded by Ryan Huang and a partner driven by the conviction that high-fidelity sound should be accessible without elite pricing. The brand represents the new wave of Chinese audio manufacturers challenging the traditionally expensive import-dominated hi-fi market. In less than a decade, the company has grown from a confidential startup to an internationally recognized player, now operating from an R&D center spanning over 2,300 square meters and holding more than 100 patents.
Fosi Audio's product portfolio spans the full spectrum of hi-fi components, with particular strength in compact amplifiers and digital-to-analog converters that deliver disproportionate performance for their price point. The brand manufactures integrated and multi-channel amplifiers, DACs, headphone amplifiers, preamplifiers including phono stages, passive subwoofer modules, speakers, headphones, and cables. This comprehensive range reflects a deliberate strategy to serve both entry-level enthusiasts and experienced audiophiles seeking value-oriented solutions rather than feature-laden complexity.
The brand occupies a distinctly mid-tier, value-conscious position in the market, distributed across more than 150 countries and frequently ranking atop Amazon's hi-fi charts. Fosi's reputation rests on pragmatic engineering—delivering compelling sound quality through efficient, optimized electronics rather than pursuing systematic upscaling. The company sells directly through its website, Amazon, and AliExpress, backing products with lifetime technical support and a 24-month warranty, positioning itself as an accessible gateway into serious hi-fi rather than a luxury or boutique concern.
See all Fosi Audio listings on RADAR.
