
Fyne Audio recently completed a three‑city SuperTour across China, with Managing Director Anji Sosna visiting key dealer partners in Guangzhou, Shanghai and Beijing to demonstrate S‑Trax in real‑world listening environments. The tour was deliberately focused on taking the product directly to dealers and customers, demonstrating not only its audible benefits but also the science and engineering behind it.
Each stop on the tour attracted a packed room and a highly engaged audience. Demonstrations centred on a consistent system comprising S‑Trax paired with F702SP, driven by Accuphase electronics, SAEC cabling and supported by a TOAC equipment rack. Using the same configuration throughout ensured that listeners could focus squarely on the contribution of S‑Trax itself, rather than changes elsewhere in the system.
Rather than positioning S‑Trax as a conventional add‑on, the demonstrations explored its role as a super‑high‑frequency extension system, derived from Fyne Audio’s flagship SuperTrax technology. Anji Sosna explained how S‑Trax operates far beyond the limits of human hearing, extending frequency response well past 20kHz, and how this ultrasonic information plays a critical role in timing, phase coherence and harmonic structure. By radiating energy in a 360‑degree, time‑aligned pattern, S‑Trax more closely mirrors how real instruments disperse sound into a room, rather than projecting a narrow, forward‑firing beam.
Listeners were guided through how this approach improves more than just perceived openness. Demonstrations highlighted gains in image focus, transient accuracy, tonal realism and the natural decay of instruments, alongside a greater sense of coherence across the entire frequency range. Many attendees took part in A/B comparisons, with numerous listeners noting immediate and repeatable differences when S‑Trax was introduced into the system, particularly in the realism of vocals, cymbals and spatial cues.
The SuperTour concluded in Beijing with the same level of engagement seen throughout the journey, reinforcing confidence in S‑Trax as a meaningful and technically grounded performance upgrade. The strong response across all three cities underlined both the effectiveness of the product and Fyne Audio’s commitment to demonstrating its technologies directly, transparently and in environments where customers can hear the results for themselves.
For those wishing to explore the technology in more detail, further information on S‑Trax is available here












