Gojeonsa

Gojeonsa trades from the Jeongsaland Main Building inside Seoul's Yongsan Electronics Land district, registered under business number 106-09-76494. Its own site lists Wilson Audio, Sonus Faber, Devialet, Esoteric, Boulder, Bakoon Products, and dCS among its current lines, spanning speakers, amplification, digital and analogue sources, and a standing inventory of pre-owned high-end equipment.

Independent corroboration comes from a feature in the Korean publication Monthly Audio (월간오디오), which traces the shop's history: it operated originally in the Sewun Sangga electronics arcade before relocating to Yongsan around 1989, and its current owner, Cho Nam-hyung, joined as a young employee in the early-to-mid 1980s and has run the business since roughly 2008 — over 30 years of continuous service by his own account to the magazine. The same feature describes an earlier-era catalogue of Sansui, Kenwood, JBL, Tannoy, and McIntosh gear giving way to today's Burmester- and Mark Levinson-led lineup, and quotes Cho on system matching and setup as the shop's core expertise, built through decades of in-home installations.

The shop's site does not describe a dedicated demonstration room in as many words, but its installation reports, product write-ups, and Yongsan's broader reputation as Seoul's cluster of walk-in high-end audio shops point to genuine in-person audition practice rather than pure mail order.